Vulnerability-Lookup

BDU:2024-03691 (CVE-2021-47194)

Vulnerability from fstec – Published: 2024-05-15 – Updated: 2024-09-16 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции cfg80211_change_iface() в модуле net/wireless/util.c ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Summary

Уязвимость функции cfg80211_change_iface() в модуле net/wireless/util.c ядра операционной системы Linux связана с некорректной инициализацией данных. Эксплуатация уязвимости может позволить нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Severity

6.8 (Medium) CVSS 2.0


                      
                        AV:L/AC:L/Au:S/C:C/I:C/A:C

7.8 (High) CVSS 3.0


                      
                        CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-665 - Неверная инициализация

Aliases

CVE-2021-47194

References

21 references

URL
https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66
https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13
https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec
https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24
https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd
https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc
https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21
https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47194
https://lore.kernel.org/linux-cve-announce/2024041035-CVE-2021-47194-51cd@gregkh/
https://git.kernel.org/linus/563fbefed46ae4c1f70cffb8eb54c02df480b2c2
https://www.cve.org/CVERecord?id=CVE-2021-47194
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.293
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.291
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.256
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.218
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.162
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.82
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.5
http://repo.red-soft.ru/redos/7.3c/x86_64/updates/
https://cve.omp.ru/bb25402

Impacted products

3 products from 3 vendors

Vendors

ООО «Ред Софт», Сообщество свободного программного обеспечения, ООО «Открытая мобильная платформа»

Products

РЕД ОС (запись в едином реестре российских программ №3751), Linux, ОС Аврора (запись в едином реестре российских программ №1543)

Versions

7.3 (РЕД ОС), от 4.10 до 4.14.255 включительно (Linux), от 4.15 до 4.19.217 включительно (Linux), от 4.0 до 4.4.292 включительно (Linux), от 4.5 до 4.9.290 включительно (Linux), от 5.11 до 5.15.4 включительно (Linux), от 4.20 до 5.4.161 включительно (Linux), от 5.5 до 5.10.81 включительно (Linux), до 5.1.1 включительно (ОС Аврора)

Product types

Operating system

Platforms

ООО «Ред Софт» РЕД ОС 7.3 (запись в едином реестре российских программ №3751), Сообщество свободного программного обеспечения Linux от 4.10 до 4.14.255 включительно, Сообщество свободного программного обеспечения Linux от 4.15 до 4.19.217 включительно, Сообщество свободного программного обеспечения Linux от 4.0 до 4.4.292 включительно, Сообщество свободного программного обеспечения Linux от 4.5 до 4.9.290 включительно, Сообщество свободного программного обеспечения Linux от 5.11 до 5.15.4 включительно, Сообщество свободного программного обеспечения Linux от 4.20 до 5.4.161 включительно, Сообщество свободного программного обеспечения Linux от 5.5 до 5.10.81 включительно, ООО «Открытая мобильная платформа» ОС Аврора до 5.1.1 включительно Mashtab TrustPhone T1 (запись в едином реестре российских программ №1543), ООО «Открытая мобильная платформа» ОС Аврора до 5.1.1 включительно Fplus T1100 (запись в едином реестре российских программ №1543), ООО «Открытая мобильная платформа» ОС Аврора до 5.1.1 включительно Fplus T800 (запись в едином реестре российских программ №1543)

Mitigations

Использование рекомендаций: Для Linux: https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.293 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.291 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.256 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.218 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.162 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.82 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.5 Для РедОС: http://repo.red-soft.ru/redos/7.3c/x86_64/updates/ Для ОС Аврора: https://cve.omp.ru/bb25402

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:L/Au:S/C:C/I:C/A:C",
  "CVSS 3.0": "AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "\u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb, \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f, \u041e\u041e\u041e \u00ab\u041e\u0442\u043a\u0440\u044b\u0442\u0430\u044f \u043c\u043e\u0431\u0438\u043b\u044c\u043d\u0430\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "7.3 (\u0420\u0415\u0414 \u041e\u0421), \u043e\u0442 4.10 \u0434\u043e 4.14.255 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.15 \u0434\u043e 4.19.217 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.0 \u0434\u043e 4.4.292 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.5 \u0434\u043e 4.9.290 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.11 \u0434\u043e 5.15.4 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.20 \u0434\u043e 5.4.161 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.5 \u0434\u043e 5.10.81 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u0434\u043e 5.1.1 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (\u041e\u0421 \u0410\u0432\u0440\u043e\u0440\u0430)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f Linux:\nhttps://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66\nhttps://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13\nhttps://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec\nhttps://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24\nhttps://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd\nhttps://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc\nhttps://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21\nhttps://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.293\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.291\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.256\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.218\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.162\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.82\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.5\n\n\u0414\u043b\u044f \u0420\u0435\u0434\u041e\u0421: http://repo.red-soft.ru/redos/7.3c/x86_64/updates/\n\n\u0414\u043b\u044f \u041e\u0421 \u0410\u0432\u0440\u043e\u0440\u0430:\nhttps://cve.omp.ru/bb25402",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "15.11.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "16.09.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "15.05.2024",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2024-03691",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2021-47194",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "\u0420\u0415\u0414 \u041e\u0421 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), Linux, \u041e\u0421 \u0410\u0432\u0440\u043e\u0440\u0430 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21161543)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "\u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 7.3  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 4.10 \u0434\u043e 4.14.255 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 4.15 \u0434\u043e 4.19.217 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 4.0 \u0434\u043e 4.4.292 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 4.5 \u0434\u043e 4.9.290 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.11 \u0434\u043e 5.15.4 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 4.20 \u0434\u043e 5.4.161 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.5 \u0434\u043e 5.10.81 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u041e\u041e\u041e \u00ab\u041e\u0442\u043a\u0440\u044b\u0442\u0430\u044f \u043c\u043e\u0431\u0438\u043b\u044c\u043d\u0430\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u00bb \u041e\u0421 \u0410\u0432\u0440\u043e\u0440\u0430 \u0434\u043e 5.1.1 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e Mashtab TrustPhone T1 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21161543), \u041e\u041e\u041e \u00ab\u041e\u0442\u043a\u0440\u044b\u0442\u0430\u044f \u043c\u043e\u0431\u0438\u043b\u044c\u043d\u0430\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u00bb \u041e\u0421 \u0410\u0432\u0440\u043e\u0440\u0430 \u0434\u043e 5.1.1 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e Fplus T1100 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21161543), \u041e\u041e\u041e \u00ab\u041e\u0442\u043a\u0440\u044b\u0442\u0430\u044f \u043c\u043e\u0431\u0438\u043b\u044c\u043d\u0430\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u00bb \u041e\u0421 \u0410\u0432\u0440\u043e\u0440\u0430 \u0434\u043e 5.1.1 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e Fplus T800 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21161543)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 cfg80211_change_iface() \u0432 \u043c\u043e\u0434\u0443\u043b\u0435 net/wireless/util.c \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u0432\u0435\u0440\u043d\u0430\u044f \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f (CWE-665)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 cfg80211_change_iface() \u0432 \u043c\u043e\u0434\u0443\u043b\u0435 net/wireless/util.c \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0434\u0430\u043d\u043d\u044b\u0445. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66\nhttps://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13\nhttps://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec\nhttps://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24\nhttps://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd\nhttps://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc\nhttps://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21\nhttps://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2\nhttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47194\nhttps://lore.kernel.org/linux-cve-announce/2024041035-CVE-2021-47194-51cd@gregkh/\nhttps://git.kernel.org/linus/563fbefed46ae4c1f70cffb8eb54c02df480b2c2\nhttps://www.cve.org/CVERecord?id=CVE-2021-47194\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.293\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.291\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.256\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.218\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.162\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.82\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.5\nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/\nhttps://cve.omp.ru/bb25402",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-665",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 6,8)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,8)"
}

CVE-2021-47194 (GCVE-0-2021-47194)

Vulnerability from cvelistv5 – Published: 2024-04-10 18:56 – Updated: 2026-08-05 08:46

Title

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type

Summary

In the Linux kernel, the following vulnerability has been resolved: cfg80211: call cfg80211_stop_ap when switch from P2P_GO type If the userspace tools switch from NL80211_IFTYPE_P2P_GO to NL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), it does not call the cleanup cfg80211_stop_ap(), this leads to the initialization of in-use data. For example, this path re-init the sdata->assigned_chanctx_list while it is still an element of assigned_vifs list, and makes that linked list corrupt.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-21 16:05 UTC

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/8f06bb8c216bcd172…
https://git.kernel.org/stable/c/0738cdb636c21ab55…
https://git.kernel.org/stable/c/4e458abbb4a523f14…
https://git.kernel.org/stable/c/b8a045e2a9b234cfb…
https://git.kernel.org/stable/c/52affc201fc22a1ab…
https://git.kernel.org/stable/c/7b97b5776daa0b39d…
https://git.kernel.org/stable/c/5a9b671c8d74a3e1b…
https://git.kernel.org/stable/c/563fbefed46ae4c1f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ac800140c20e7ae51117e71289065bedd4930fc2 , < 8f06bb8c216bcd172394f61e557727e691b4cb24 (git) Affected: ac800140c20e7ae51117e71289065bedd4930fc2 , < 0738cdb636c21ab552eaecf905efa4a6070e3ebc (git) Affected: ac800140c20e7ae51117e71289065bedd4930fc2 , < 4e458abbb4a523f1413bfe15c079cf4e24c15b21 (git) Affected: ac800140c20e7ae51117e71289065bedd4930fc2 , < b8a045e2a9b234cfbc06cf36923886164358ddec (git) Affected: ac800140c20e7ae51117e71289065bedd4930fc2 , < 52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 (git) Affected: ac800140c20e7ae51117e71289065bedd4930fc2 , < 7b97b5776daa0b39dbdadfea176f9cc0646d4a66 (git) Affected: ac800140c20e7ae51117e71289065bedd4930fc2 , < 5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd (git) Affected: ac800140c20e7ae51117e71289065bedd4930fc2 , < 563fbefed46ae4c1f70cffb8eb54c02df480b2c2 (git)
Linux	Linux	Affected: 3.6 Unaffected: 0 , < 3.6 (semver) Unaffected: 4.4.293 , ≤ 4.4.* (semver) Unaffected: 4.9.291 , ≤ 4.9.* (semver) Unaffected: 4.14.256 , ≤ 4.14.* (semver) Unaffected: 4.19.218 , ≤ 4.19.* (semver) Unaffected: 5.4.162 , ≤ 5.4.* (semver) Unaffected: 5.10.82 , ≤ 5.10.* (semver) Unaffected: 5.15.5 , ≤ 5.15.* (semver) Unaffected: 5.16 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47194",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-21T16:05:05.968362Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-21T16:05:16.617Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:07.292Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/wireless/util.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8f06bb8c216bcd172394f61e557727e691b4cb24",
              "status": "affected",
              "version": "ac800140c20e7ae51117e71289065bedd4930fc2",
              "versionType": "git"
            },
            {
              "lessThan": "0738cdb636c21ab552eaecf905efa4a6070e3ebc",
              "status": "affected",
              "version": "ac800140c20e7ae51117e71289065bedd4930fc2",
              "versionType": "git"
            },
            {
              "lessThan": "4e458abbb4a523f1413bfe15c079cf4e24c15b21",
              "status": "affected",
              "version": "ac800140c20e7ae51117e71289065bedd4930fc2",
              "versionType": "git"
            },
            {
              "lessThan": "b8a045e2a9b234cfbc06cf36923886164358ddec",
              "status": "affected",
              "version": "ac800140c20e7ae51117e71289065bedd4930fc2",
              "versionType": "git"
            },
            {
              "lessThan": "52affc201fc22a1ab9a59ef0ed641a9adfcb8d13",
              "status": "affected",
              "version": "ac800140c20e7ae51117e71289065bedd4930fc2",
              "versionType": "git"
            },
            {
              "lessThan": "7b97b5776daa0b39dbdadfea176f9cc0646d4a66",
              "status": "affected",
              "version": "ac800140c20e7ae51117e71289065bedd4930fc2",
              "versionType": "git"
            },
            {
              "lessThan": "5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd",
              "status": "affected",
              "version": "ac800140c20e7ae51117e71289065bedd4930fc2",
              "versionType": "git"
            },
            {
              "lessThan": "563fbefed46ae4c1f70cffb8eb54c02df480b2c2",
              "status": "affected",
              "version": "ac800140c20e7ae51117e71289065bedd4930fc2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/wireless/util.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.6"
            },
            {
              "lessThan": "3.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.293",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.291",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.256",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.218",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.82",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.4.293",
                  "versionStartIncluding": "3.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.291",
                  "versionStartIncluding": "3.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.256",
                  "versionStartIncluding": "3.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.218",
                  "versionStartIncluding": "3.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.162",
                  "versionStartIncluding": "3.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.82",
                  "versionStartIncluding": "3.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.5",
                  "versionStartIncluding": "3.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16",
                  "versionStartIncluding": "3.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncfg80211: call cfg80211_stop_ap when switch from P2P_GO type\n\nIf the userspace tools switch from NL80211_IFTYPE_P2P_GO to\nNL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), it\ndoes not call the cleanup cfg80211_stop_ap(), this leads to the\ninitialization of in-use data. For example, this path re-init the\nsdata-\u003eassigned_chanctx_list while it is still an element of\nassigned_vifs list, and makes that linked list corrupt."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is triggered exclusively via local nl80211 Generic Netlink (NL80211_CMD_SET_INTERFACE \u2192 nl80211_set_interface \u2192 cfg80211_change_iface), not by processing over-the-air WiFi frames or remote network packets.\nAC:L - An attacker fully controls the sequence\u2014set the interface to P2P_GO, start AP (assigning the chanctx), then SET_INTERFACE to ADHOC\u2014and reliably causes INIT_LIST_HEAD on an still-linked assigned_chanctx_list with no attacker-independent race or external timing.\nPR:L - NL80211_CMD_SET_INTERFACE uses GENL_UNS_ADMIN_PERM, requiring only CAP_NET_ADMIN in the socket netns user namespace; with mac80211_hwsim (also GENL_UNS_ADMIN_PERM) or a wiphy in that netns this is reachable via unshare -Urn, so privileges score Low per CNA guidance.\nUI:N - The attacker issues the netlink commands themselves to change the interface type; no separate victim action such as mounting a filesystem or approving a prompt is required.\nS:U - Impact stays within the host kernel wireless/mac80211 authority (local list corruption / privilege-escalation class) and does not cross a VM, IOMMU, or other separate security boundary.\nC:H - INIT_LIST_HEAD on an in-use assigned_chanctx_list corrupts the chanctx assigned_vifs list, and subsequent walks dereference poisoned/reused pointers; this list-corruption class enables heap reuse and arbitrary kernel memory disclosure primitives.\nI:H - Corrupted list_head unlink/walk paths over attacker-influenced heap state yield classic arbitrary-write and control-flow hijack primitives, matching High integrity impact for kernel list corruption.\nA:H - Syzbot reproduces a general protection fault in ieee80211_chanctx_num_assigned when walking the corrupted assigned_vifs list, causing a kernel oops/panic and full denial of service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:46:38.073Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24"
        },
        {
          "url": "https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc"
        },
        {
          "url": "https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21"
        },
        {
          "url": "https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec"
        },
        {
          "url": "https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66"
        },
        {
          "url": "https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd"
        },
        {
          "url": "https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2"
        }
      ],
      "title": "cfg80211: call cfg80211_stop_ap when switch from P2P_GO type",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47194",
    "datePublished": "2024-04-10T18:56:31.361Z",
    "dateReserved": "2024-03-25T09:12:14.114Z",
    "dateUpdated": "2026-08-05T08:46:38.073Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

BDU:2024-03691 (CVE-2021-47194)

CVE-2021-47194 (GCVE-0-2021-47194)

Tags

Sightings

Nomenclature

Related by attack behaviour