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EUVD-2026-344370
European Vulnerability Database identifier assigned by ENISAReserved
2026-10-02 07:56
Assigner
ENISA
Alias of
a CVE record, shown under related vulnerabilities.
This identifier carries no description, severity or references of its own:
they belong to that CVE.
{
"assigner": "ENISA",
"date_reserved": "2026-10-02T07:56:05.556909+00:00",
"id": "EUVD-2026-344370"
}
CVE-2021-47055 (GCVE-0-2021-47055)
Vulnerability from cvelistv5 – Published: 2024-02-29 22:37 – Updated: 2026-08-05 08:45
VLAI
EPSS
VEX
Title
mtd: require write permissions for locking and badblock ioctls
Summary
In the Linux kernel, the following vulnerability has been resolved:
mtd: require write permissions for locking and badblock ioctls
MEMLOCK, MEMUNLOCK and OTPLOCK modify protection bits. Thus require
write permission. Depending on the hardware MEMLOCK might even be
write-once, e.g. for SPI-NOR flashes with their WP# tied to GND. OTPLOCK
is always write-once.
MEMSETBADBLOCK modifies the bad block table.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-01 15:53 UTC
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1c9f9125892a43901438bf704ada6b7019e2a884 , < f4d28d8b9b0e7c4ae04214b8d7e0b0466ec6bcaf
(git)
Affected: 583d42400532fbd6228b0254d7c732b771e4750d , < 9625b00cac6630479c0ff4b9fafa88bee636e1f0 (git) Affected: 389c74c218d3b182e9cd767e98cee0e0fd0dabaa , < f73b29819c6314c0ba8b7d5892dfb03487424bee (git) Affected: ab1a602a9cea98aa37b2e6851b168d2a2633a58d , < 75ed985bd6c8ac1d4e673e93ea9d96c9908c1d37 (git) Affected: 9a53e8bd59d9f070505e51d3fd19606a270e6b93 , < 5880afefe0cb9b2d5e801816acd58bfe91a96981 (git) Affected: f7e6b19bc76471ba03725fe58e0c218a3d6266c3 , < 7b6552719c0ccbbea29dde4be141da54fdb5877e (git) Affected: f7e6b19bc76471ba03725fe58e0c218a3d6266c3 , < 077259f5e777c3c8821f6b41dee709fcda27306b (git) Affected: f7e6b19bc76471ba03725fe58e0c218a3d6266c3 , < a08799d3e8c8088640956237c183f83463c39668 (git) Affected: f7e6b19bc76471ba03725fe58e0c218a3d6266c3 , < 1e97743fd180981bef5f01402342bb54bf1c6366 (git) Affected: 36a8b2f49235e63ab3f901fe12e1b6732f075c2e (git) Affected: eb3d82abc335624a5e8ecfb75aba0b684e2dc4db (git) Affected: 4.4.233 , < 4.4.269 (semver) Affected: 4.9.233 , < 4.9.269 (semver) Affected: 4.14.194 , < 4.14.233 (semver) Affected: 4.19.139 , < 4.19.191 (semver) Affected: 5.4.58 , < 5.4.119 (semver) Affected: 5.7.15 , < 5.8 (semver) Affected: 5.8.1 , < 5.9 (semver) |
|
| Linux | Linux |
Affected:
5.9
Unaffected: 0 , < 5.9 (semver) Unaffected: 4.4.269 , ≤ 4.4.* (semver) Unaffected: 4.9.269 , ≤ 4.9.* (semver) Unaffected: 4.14.233 , ≤ 4.14.* (semver) Unaffected: 4.19.191 , ≤ 4.19.* (semver) Unaffected: 5.4.119 , ≤ 5.4.* (semver) Unaffected: 5.10.37 , ≤ 5.10.* (semver) Unaffected: 5.11.21 , ≤ 5.11.* (semver) Unaffected: 5.12.4 , ≤ 5.12.* (semver) Unaffected: 5.13 , ≤ * (original_commit_for_fix) |
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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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.
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