CVE-2024-46755 (GCVE-0-2024-46755)

Vulnerability from cvelistv5 – Published: 2024-09-18 07:12 – Updated: 2026-08-05 11:38
VLAI
Title
wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id() mwifiex_get_priv_by_id() returns the priv pointer corresponding to the bss_num and bss_type, but without checking if the priv is actually currently in use. Unused priv pointers do not have a wiphy attached to them which can lead to NULL pointer dereferences further down the callstack. Fix this by returning only used priv pointers which have priv->bss_mode set to something else than NL80211_IFTYPE_UNSPECIFIED. Said NULL pointer dereference happened when an Accesspoint was started with wpa_supplicant -i mlan0 with this config: network={ ssid="somessid" mode=2 frequency=2412 key_mgmt=WPA-PSK WPA-PSK-SHA256 proto=RSN group=CCMP pairwise=CCMP psk="12345678" } When waiting for the AP to be established, interrupting wpa_supplicant with <ctrl-c> and starting it again this happens: | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000140 | Mem abort info: | ESR = 0x0000000096000004 | EC = 0x25: DABT (current EL), IL = 32 bits | SET = 0, FnV = 0 | EA = 0, S1PTW = 0 | FSC = 0x04: level 0 translation fault | Data abort info: | ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 | CM = 0, WnR = 0, TnD = 0, TagAccess = 0 | GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 | user pgtable: 4k pages, 48-bit VAs, pgdp=0000000046d96000 | [0000000000000140] pgd=0000000000000000, p4d=0000000000000000 | Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP | Modules linked in: caam_jr caamhash_desc spidev caamalg_desc crypto_engine authenc libdes mwifiex_sdio +mwifiex crct10dif_ce cdc_acm onboard_usb_hub fsl_imx8_ddr_perf imx8m_ddrc rtc_ds1307 lm75 rtc_snvs +imx_sdma caam imx8mm_thermal spi_imx error imx_cpufreq_dt fuse ip_tables x_tables ipv6 | CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.9.0-00007-g937242013fce-dirty #18 | Hardware name: somemachine (DT) | Workqueue: events sdio_irq_work | pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : mwifiex_get_cfp+0xd8/0x15c [mwifiex] | lr : mwifiex_get_cfp+0x34/0x15c [mwifiex] | sp : ffff8000818b3a70 | x29: ffff8000818b3a70 x28: ffff000006bfd8a5 x27: 0000000000000004 | x26: 000000000000002c x25: 0000000000001511 x24: 0000000002e86bc9 | x23: ffff000006bfd996 x22: 0000000000000004 x21: ffff000007bec000 | x20: 000000000000002c x19: 0000000000000000 x18: 0000000000000000 | x17: 000000040044ffff x16: 00500072b5503510 x15: ccc283740681e517 | x14: 0201000101006d15 x13: 0000000002e8ff43 x12: 002c01000000ffb1 | x11: 0100000000000000 x10: 02e8ff43002c0100 x9 : 0000ffb100100157 | x8 : ffff000003d20000 x7 : 00000000000002f1 x6 : 00000000ffffe124 | x5 : 0000000000000001 x4 : 0000000000000003 x3 : 0000000000000000 | x2 : 0000000000000000 x1 : 0001000000011001 x0 : 0000000000000000 | Call trace: | mwifiex_get_cfp+0xd8/0x15c [mwifiex] | mwifiex_parse_single_response_buf+0x1d0/0x504 [mwifiex] | mwifiex_handle_event_ext_scan_report+0x19c/0x2f8 [mwifiex] | mwifiex_process_sta_event+0x298/0xf0c [mwifiex] | mwifiex_process_event+0x110/0x238 [mwifiex] | mwifiex_main_process+0x428/0xa44 [mwifiex] | mwifiex_sdio_interrupt+0x64/0x12c [mwifiex_sdio] | process_sdio_pending_irqs+0x64/0x1b8 | sdio_irq_work+0x4c/0x7c | process_one_work+0x148/0x2a0 | worker_thread+0x2fc/0x40c | kthread+0x110/0x114 | ret_from_fork+0x10/0x20 | Code: a94153f3 a8c37bfd d50323bf d65f03c0 (f940a000) | ---[ end trace 0000000000000000 ]---
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/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 2024-09-29 14:46 UTC
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 93a1df48d224296fb527d32fbec4d5162828feb4 , < a12cf97cbefa139ef8d95081f2ea047cbbd74b7a (git)
Affected: 93a1df48d224296fb527d32fbec4d5162828feb4 , < d834433ff313838a259bb6607055ece87b895b66 (git)
Affected: 93a1df48d224296fb527d32fbec4d5162828feb4 , < 9813770f25855b866b8ead8155b8806b2db70f6d (git)
Affected: 93a1df48d224296fb527d32fbec4d5162828feb4 , < cb67b2e51b75f1a17bee7599c8161b96e1808a70 (git)
Affected: 93a1df48d224296fb527d32fbec4d5162828feb4 , < 1a05d8d02cfa3540ea5dbd6b39446bd3f515521f (git)
Affected: 93a1df48d224296fb527d32fbec4d5162828feb4 , < c2618dcb26c7211342b54520b5b148c0d3471c8a (git)
Affected: 93a1df48d224296fb527d32fbec4d5162828feb4 , < c16916dd6c16fa7e13ca3923eb6b9f50d848ad03 (git)
Affected: 93a1df48d224296fb527d32fbec4d5162828feb4 , < c145eea2f75ff7949392aebecf7ef0a81c1f6c14 (git)
Create a notification for this product.
Linux Linux Affected: 3.2
Unaffected: 0 , < 3.2 (semver)
Unaffected: 4.19.322 , ≤ 4.19.* (semver)
Unaffected: 5.4.284 , ≤ 5.4.* (semver)
Unaffected: 5.10.226 , ≤ 5.10.* (semver)
Unaffected: 5.15.167 , ≤ 5.15.* (semver)
Unaffected: 6.1.110 , ≤ 6.1.* (semver)
Unaffected: 6.6.51 , ≤ 6.6.* (semver)
Unaffected: 6.10.10 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()\n\nmwifiex_get_priv_by_id() returns the priv pointer corresponding to\nthe bss_num and bss_type, but without checking if the priv is actually\ncurrently in use.\nUnused priv pointers do not have a wiphy attached to them which can\nlead to NULL pointer dereferences further down the callstack.  Fix\nthis by returning only used priv pointers which have priv-\u003ebss_mode\nset to something else than NL80211_IFTYPE_UNSPECIFIED.\n\nSaid NULL pointer dereference happened when an Accesspoint was started\nwith wpa_supplicant -i mlan0 with this config:\n\nnetwork={\n        ssid=\"somessid\"\n        mode=2\n        frequency=2412\n        key_mgmt=WPA-PSK WPA-PSK-SHA256\n        proto=RSN\n        group=CCMP\n        pairwise=CCMP\n        psk=\"12345678\"\n}\n\nWhen waiting for the AP to be established, interrupting wpa_supplicant\nwith \u003cctrl-c\u003e and starting it again this happens:\n\n| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000140\n| Mem abort info:\n|   ESR = 0x0000000096000004\n|   EC = 0x25: DABT (current EL), IL = 32 bits\n|   SET = 0, FnV = 0\n|   EA = 0, S1PTW = 0\n|   FSC = 0x04: level 0 translation fault\n| Data abort info:\n|   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n|   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n|   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n| user pgtable: 4k pages, 48-bit VAs, pgdp=0000000046d96000\n| [0000000000000140] pgd=0000000000000000, p4d=0000000000000000\n| Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n| Modules linked in: caam_jr caamhash_desc spidev caamalg_desc crypto_engine authenc libdes mwifiex_sdio\n+mwifiex crct10dif_ce cdc_acm onboard_usb_hub fsl_imx8_ddr_perf imx8m_ddrc rtc_ds1307 lm75 rtc_snvs\n+imx_sdma caam imx8mm_thermal spi_imx error imx_cpufreq_dt fuse ip_tables x_tables ipv6\n| CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.9.0-00007-g937242013fce-dirty #18\n| Hardware name: somemachine (DT)\n| Workqueue: events sdio_irq_work\n| pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n| pc : mwifiex_get_cfp+0xd8/0x15c [mwifiex]\n| lr : mwifiex_get_cfp+0x34/0x15c [mwifiex]\n| sp : ffff8000818b3a70\n| x29: ffff8000818b3a70 x28: ffff000006bfd8a5 x27: 0000000000000004\n| x26: 000000000000002c x25: 0000000000001511 x24: 0000000002e86bc9\n| x23: ffff000006bfd996 x22: 0000000000000004 x21: ffff000007bec000\n| x20: 000000000000002c x19: 0000000000000000 x18: 0000000000000000\n| x17: 000000040044ffff x16: 00500072b5503510 x15: ccc283740681e517\n| x14: 0201000101006d15 x13: 0000000002e8ff43 x12: 002c01000000ffb1\n| x11: 0100000000000000 x10: 02e8ff43002c0100 x9 : 0000ffb100100157\n| x8 : ffff000003d20000 x7 : 00000000000002f1 x6 : 00000000ffffe124\n| x5 : 0000000000000001 x4 : 0000000000000003 x3 : 0000000000000000\n| x2 : 0000000000000000 x1 : 0001000000011001 x0 : 0000000000000000\n| Call trace:\n|  mwifiex_get_cfp+0xd8/0x15c [mwifiex]\n|  mwifiex_parse_single_response_buf+0x1d0/0x504 [mwifiex]\n|  mwifiex_handle_event_ext_scan_report+0x19c/0x2f8 [mwifiex]\n|  mwifiex_process_sta_event+0x298/0xf0c [mwifiex]\n|  mwifiex_process_event+0x110/0x238 [mwifiex]\n|  mwifiex_main_process+0x428/0xa44 [mwifiex]\n|  mwifiex_sdio_interrupt+0x64/0x12c [mwifiex_sdio]\n|  process_sdio_pending_irqs+0x64/0x1b8\n|  sdio_irq_work+0x4c/0x7c\n|  process_one_work+0x148/0x2a0\n|  worker_thread+0x2fc/0x40c\n|  kthread+0x110/0x114\n|  ret_from_fork+0x10/0x20\n| Code: a94153f3 a8c37bfd d50323bf d65f03c0 (f940a000)\n| ---[ end trace 0000000000000000 ]---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The vulnerable dispatch is driven by data arriving from the wireless medium \u2014 ext-scan-report events generated from nearby beacons/probe responses and RX data frames whose RXPD `bss_num`/`bss_type` select the priv \u2014 so an attacker within 802.11 range of the mwifiex device supplies the triggering input. This matches the adjacent-network treatment used for other frame-driven mwifiex/mac80211 defects.\nAC:L - No race must be won: the zero-initialized decoy privs permanently shadow `(bss_num 0, bss_type STA)` on any device operating in AP/hotspot mode, and privs left behind by `mwifiex_del_virtual_intf()` keep matching their old BSS id indefinitely, so a steady stream of frames/events reliably lands on an unused priv.\nPR:N - The attacker needs no credentials or association on the target \u2014 unassociated beacons/probe responses feed the scan-result event path and received frames feed the RX data path, both of which are processed before any authentication state matters.\nUI:N - No victim action is required; the stale-priv condition is the device\u0027s steady-state configuration in AP/hotspot deployments and after any routine interface teardown, and the driver processes the offending events and frames autonomously in a workqueue/IRQ context.\nS:U - Both the flawed lookup and its consequences are confined to the kernel\u0027s own security authority within the mwifiex driver; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - A stale priv causes reads through dangling and never-initialized pointers, and on a deleted interface the freed `priv-\u003ehist_data` object continues to be accessed (including read back via the debugfs histogram after reallocation), giving disclosure of reused heap contents; per use-after-free treatment this is High.\nI:H - `mwifiex_hist_data_add()`/`mwifiex_hist_data_set()` perform `atomic_inc()` into the freed `hist_data` buffer at offsets derived from the received frame\u0027s `rx_rate`/`snr`/`nf` fields (with `rssi = snr - nflr` able to index past the arrays), yielding an out-of-bounds write primitive on freed heap memory that is exploitable for control-flow influence.\nA:H - The commit documents a reproducible kernel oops \u2014 NULL dereference of `priv-\u003ewdev.wiphy-\u003ebands[]` in `mwifiex_get_cfp()` \u2014 and the same stale priv also NULL-derefs `priv-\u003enetdev` in `eth_type_trans()`, producing a kernel panic."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:38:23.495Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/a12cf97cbefa139ef8d95081f2ea047cbbd74b7a"
        },
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/cb67b2e51b75f1a17bee7599c8161b96e1808a70"
        },
        {
          "url": "https://git.kernel.org/stable/c/1a05d8d02cfa3540ea5dbd6b39446bd3f515521f"
        },
        {
          "url": "https://git.kernel.org/stable/c/c2618dcb26c7211342b54520b5b148c0d3471c8a"
        },
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        {
          "url": "https://git.kernel.org/stable/c/c145eea2f75ff7949392aebecf7ef0a81c1f6c14"
        }
      ],
      "title": "wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()",
      "x_generator": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-46755",
    "datePublished": "2024-09-18T07:12:14.820Z",
    "dateReserved": "2024-09-11T15:12:18.270Z",
    "dateUpdated": "2026-08-05T11:38:23.495Z",
    "state": "PUBLISHED"
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        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()\n\nmwifiex_get_priv_by_id() returns the priv pointer corresponding to\nthe bss_num and bss_type, but without checking if the priv is actually\ncurrently in use.\nUnused priv pointers do not have a wiphy attached to them which can\nlead to NULL pointer dereferences further down the callstack.  Fix\nthis by returning only used priv pointers which have priv-\u003ebss_mode\nset to something else than NL80211_IFTYPE_UNSPECIFIED.\n\nSaid NULL pointer dereference happened when an Accesspoint was started\nwith wpa_supplicant -i mlan0 with this config:\n\nnetwork={\n        ssid=\"somessid\"\n        mode=2\n        frequency=2412\n        key_mgmt=WPA-PSK WPA-PSK-SHA256\n        proto=RSN\n        group=CCMP\n        pairwise=CCMP\n        psk=\"12345678\"\n}\n\nWhen waiting for the AP to be established, interrupting wpa_supplicant\nwith \u003cctrl-c\u003e and starting it again this happens:\n\n| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000140\n| Mem abort info:\n|   ESR = 0x0000000096000004\n|   EC = 0x25: DABT (current EL), IL = 32 bits\n|   SET = 0, FnV = 0\n|   EA = 0, S1PTW = 0\n|   FSC = 0x04: level 0 translation fault\n| Data abort info:\n|   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n|   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n|   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n| user pgtable: 4k pages, 48-bit VAs, pgdp=0000000046d96000\n| [0000000000000140] pgd=0000000000000000, p4d=0000000000000000\n| Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n| Modules linked in: caam_jr caamhash_desc spidev caamalg_desc crypto_engine authenc libdes mwifiex_sdio\n+mwifiex crct10dif_ce cdc_acm onboard_usb_hub fsl_imx8_ddr_perf imx8m_ddrc rtc_ds1307 lm75 rtc_snvs\n+imx_sdma caam imx8mm_thermal spi_imx error imx_cpufreq_dt fuse ip_tables x_tables ipv6\n| CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.9.0-00007-g937242013fce-dirty #18\n| Hardware name: somemachine (DT)\n| Workqueue: events sdio_irq_work\n| pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n| pc : mwifiex_get_cfp+0xd8/0x15c [mwifiex]\n| lr : mwifiex_get_cfp+0x34/0x15c [mwifiex]\n| sp : ffff8000818b3a70\n| x29: ffff8000818b3a70 x28: ffff000006bfd8a5 x27: 0000000000000004\n| x26: 000000000000002c x25: 0000000000001511 x24: 0000000002e86bc9\n| x23: ffff000006bfd996 x22: 0000000000000004 x21: ffff000007bec000\n| x20: 000000000000002c x19: 0000000000000000 x18: 0000000000000000\n| x17: 000000040044ffff x16: 00500072b5503510 x15: ccc283740681e517\n| x14: 0201000101006d15 x13: 0000000002e8ff43 x12: 002c01000000ffb1\n| x11: 0100000000000000 x10: 02e8ff43002c0100 x9 : 0000ffb100100157\n| x8 : ffff000003d20000 x7 : 00000000000002f1 x6 : 00000000ffffe124\n| x5 : 0000000000000001 x4 : 0000000000000003 x3 : 0000000000000000\n| x2 : 0000000000000000 x1 : 0001000000011001 x0 : 0000000000000000\n| Call trace:\n|  mwifiex_get_cfp+0xd8/0x15c [mwifiex]\n|  mwifiex_parse_single_response_buf+0x1d0/0x504 [mwifiex]\n|  mwifiex_handle_event_ext_scan_report+0x19c/0x2f8 [mwifiex]\n|  mwifiex_process_sta_event+0x298/0xf0c [mwifiex]\n|  mwifiex_process_event+0x110/0x238 [mwifiex]\n|  mwifiex_main_process+0x428/0xa44 [mwifiex]\n|  mwifiex_sdio_interrupt+0x64/0x12c [mwifiex_sdio]\n|  process_sdio_pending_irqs+0x64/0x1b8\n|  sdio_irq_work+0x4c/0x7c\n|  process_one_work+0x148/0x2a0\n|  worker_thread+0x2fc/0x40c\n|  kthread+0x110/0x114\n|  ret_from_fork+0x10/0x20\n| Code: a94153f3 a8c37bfd d50323bf d65f03c0 (f940a000)\n| ---[ end trace 0000000000000000 ]---"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mwifiex: No devolver priv sin usar en mwifiex_get_priv_by_id() mwifiex_get_priv_by_id() devuelve el puntero priv correspondiente a bss_num y bss_type, pero sin comprobar si el priv est\u00e1 realmente en uso actualmente. Los punteros priv sin usar no tienen un wiphy adjunto a ellos, lo que puede provocar desreferencias de puntero NULL m\u00e1s abajo en la pila de llamadas. Solucione esto devolviendo solo punteros priv usados que tengan priv-\u0026gt;bss_mode establecido en algo distinto de NL80211_IFTYPE_UNSPECIFIED. Dicha desreferencia de puntero NULL ocurri\u00f3 cuando un Accesspoint fue iniciado con wpa_supplicant -i mlan0 con esta configuraci\u00f3n: network={ ssid=\"somessid\" mode=2 frequency=2412 key_mgmt=WPA-PSK WPA-PSK-SHA256 proto=RSN group=CCMP pairwise=CCMP psk=\"12345678\" } Al esperar a que se establezca el AP, interrumpiendo wpa_supplicant con  y reinici\u00e1ndolo esto sucede: | No se puede manejar la desreferencia de puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000140 | Informaci\u00f3n de aborto de memoria: | ESR = 0x0000000096000004 | EC = 0x25: DABT (EL actual), IL = 32 bits | SET = 0, FnV = 0 | EA = 0, S1PTW = 0 | FSC = 0x04: error de traducci\u00f3n de nivel 0 | Informaci\u00f3n de cancelaci\u00f3n de datos: | ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 | CM = 0, WnR = 0, TnD = 0, TagAccess = 0 | GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 | pgtable del usuario: p\u00e1ginas de 4k, VA de 48 bits, pgdp=0000000046d96000 | [0000000000000140] pgd=000000000000000, p4d=0000000000000000 | Error interno: Oops: 0000000096000004 [#1] PREEMPT SMP | M\u00f3dulos vinculados en: caam_jr caamhash_desc spidev caamalg_desc crypto_engine authenc libdes mwifiex_sdio +mwifiex crct10dif_ce cdc_acm onboard_usb_hub fsl_imx8_ddr_perf imx8m_ddrc rtc_ds1307 lm75 rtc_snvs +imx_sdma caam imx8mm_thermal spi_imx error imx_cpufreq_dt fuse ip_tables x_tables ipv6 | CPU: 0 PID: 8 Comm: kworker/0:1 No contaminado 6.9.0-00007-g937242013fce-dirty #18 | Nombre del hardware: somemachine (DT) | Cola de trabajo: eventos sdio_irq_work | pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : mwifiex_get_cfp+0xd8/0x15c [mwifiex] | lr : mwifiex_get_cfp+0x34/0x15c [mwifiex] | sp : ffff8000818b3a70 | x29: ffff8000818b3a70 x28: ffff000006bfd8a5 x27: 0000000000000004 | x26: 000000000000002c x25: 00000000000001511 x24: 00000000002e86bc9 | x23: ffff000006bfd996 x22: 0000000000000004 x21: ffff000007bec000 | x20: 000000000000002c x19: 0000000000000000 x18: 0000000000000000 | x17: 000000040044ffff x16: 00500072b5503510 x15: ccc283740681e517 | x14: 0201000101006d15 x13: 0000000002e8ff43 x12: 002c0100000ffb1 | x11: 0100000000000000 x10: 02e8ff43002c0100 x9: 0000ffb100100157 | x8: ffff000003d20000 x7: 00000000000002f1 x6: 00000000ffffe124 | x5 : 0000000000000001 x4 : 0000000000000003 x3 : 0000000000000000 | x2 : 0000000000000000 x1 : 0001000000011001 x0 : 0000000000000000 | Rastreo de llamadas: | mwifiex_get_cfp+0xd8/0x15c [mwifiex] | mwifiex_parse_single_response_buf+0x1d0/0x504 [mwifiex] | mwifiex_handle_event_ext_scan_report+0x19c/0x2f8 [mwifiex] | mwifiex_process_sta_event+0x298/0xf0c [mwifiex] | mwifiex_process_event+0x110/0x238 [mwifiex] | mwifiex_main_process+0x428/0xa44 [mwifiex] | mwifiex_sdio_interrupt+0x64/0x12c [mwifiex_sdio] | proceso_sdio_pending_irqs+0x64/0x1b8 | sdio_irq_work+0x4c/0x7c | proceso_one_work+0x148/0x2a0 | subproceso_trabajador+0x2fc/0x40c | kthread+0x110/0x114 | ret_from_fork+0x10/0x20 | C\u00f3digo: a94153f3 a8c37bfd d50323bf d65f03c0 (f940a000) | ---[ fin del seguimiento 0000000000000000 ]---"
          }
        ],
        "id": "CVE-2024-46755",
        "lastModified": "2026-08-04T11:20:22.560",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
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                "attackVector": "ADJACENT_NETWORK",
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                "userInteraction": "NONE",
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        "published": "2024-09-18T08:15:04.203",
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      "current_release_date": "2026-10-01T17:20:07+00:00",
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      "product_status:known_affected": "198",
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      "status": "final",
      "title": "kernel: wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-46755.json",
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            "title": "CVE Program Container"
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            "providerMetadata": {
              "dateUpdated": "2024-09-29T15:51:56.719Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
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            "title": "CISA ADP Vulnrichment"
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              "programFiles": [
                "drivers/net/wireless/marvell/mwifiex/main.h"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "a12cf97cbefa139ef8d95081f2ea047cbbd74b7a",
                  "status": "affected",
                  "version": "93a1df48d224296fb527d32fbec4d5162828feb4",
                  "versionType": "git"
                },
                {
                  "lessThan": "d834433ff313838a259bb6607055ece87b895b66",
                  "status": "affected",
                  "version": "93a1df48d224296fb527d32fbec4d5162828feb4",
                  "versionType": "git"
                },
                {
                  "lessThan": "9813770f25855b866b8ead8155b8806b2db70f6d",
                  "status": "affected",
                  "version": "93a1df48d224296fb527d32fbec4d5162828feb4",
                  "versionType": "git"
                },
                {
                  "lessThan": "cb67b2e51b75f1a17bee7599c8161b96e1808a70",
                  "status": "affected",
                  "version": "93a1df48d224296fb527d32fbec4d5162828feb4",
                  "versionType": "git"
                },
                {
                  "lessThan": "1a05d8d02cfa3540ea5dbd6b39446bd3f515521f",
                  "status": "affected",
                  "version": "93a1df48d224296fb527d32fbec4d5162828feb4",
                  "versionType": "git"
                },
                {
                  "lessThan": "c2618dcb26c7211342b54520b5b148c0d3471c8a",
                  "status": "affected",
                  "version": "93a1df48d224296fb527d32fbec4d5162828feb4",
                  "versionType": "git"
                },
                {
                  "lessThan": "c16916dd6c16fa7e13ca3923eb6b9f50d848ad03",
                  "status": "affected",
                  "version": "93a1df48d224296fb527d32fbec4d5162828feb4",
                  "versionType": "git"
                },
                {
                  "lessThan": "c145eea2f75ff7949392aebecf7ef0a81c1f6c14",
                  "status": "affected",
                  "version": "93a1df48d224296fb527d32fbec4d5162828feb4",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/wireless/marvell/mwifiex/main.h"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "3.2"
                },
                {
                  "lessThan": "3.2",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "4.19.*",
                  "status": "unaffected",
                  "version": "4.19.322",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.284",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.226",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.167",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.110",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.51",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.10.*",
                  "status": "unaffected",
                  "version": "6.10.10",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.11",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.19.322",
                      "versionStartIncluding": "3.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.284",
                      "versionStartIncluding": "3.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.226",
                      "versionStartIncluding": "3.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.167",
                      "versionStartIncluding": "3.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.110",
                      "versionStartIncluding": "3.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.51",
                      "versionStartIncluding": "3.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.10.10",
                      "versionStartIncluding": "3.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.11",
                      "versionStartIncluding": "3.2",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()\n\nmwifiex_get_priv_by_id() returns the priv pointer corresponding to\nthe bss_num and bss_type, but without checking if the priv is actually\ncurrently in use.\nUnused priv pointers do not have a wiphy attached to them which can\nlead to NULL pointer dereferences further down the callstack.  Fix\nthis by returning only used priv pointers which have priv-\u003ebss_mode\nset to something else than NL80211_IFTYPE_UNSPECIFIED.\n\nSaid NULL pointer dereference happened when an Accesspoint was started\nwith wpa_supplicant -i mlan0 with this config:\n\nnetwork={\n        ssid=\"somessid\"\n        mode=2\n        frequency=2412\n        key_mgmt=WPA-PSK WPA-PSK-SHA256\n        proto=RSN\n        group=CCMP\n        pairwise=CCMP\n        psk=\"12345678\"\n}\n\nWhen waiting for the AP to be established, interrupting wpa_supplicant\nwith \u003cctrl-c\u003e and starting it again this happens:\n\n| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000140\n| Mem abort info:\n|   ESR = 0x0000000096000004\n|   EC = 0x25: DABT (current EL), IL = 32 bits\n|   SET = 0, FnV = 0\n|   EA = 0, S1PTW = 0\n|   FSC = 0x04: level 0 translation fault\n| Data abort info:\n|   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n|   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n|   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n| user pgtable: 4k pages, 48-bit VAs, pgdp=0000000046d96000\n| [0000000000000140] pgd=0000000000000000, p4d=0000000000000000\n| Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n| Modules linked in: caam_jr caamhash_desc spidev caamalg_desc crypto_engine authenc libdes mwifiex_sdio\n+mwifiex crct10dif_ce cdc_acm onboard_usb_hub fsl_imx8_ddr_perf imx8m_ddrc rtc_ds1307 lm75 rtc_snvs\n+imx_sdma caam imx8mm_thermal spi_imx error imx_cpufreq_dt fuse ip_tables x_tables ipv6\n| CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.9.0-00007-g937242013fce-dirty #18\n| Hardware name: somemachine (DT)\n| Workqueue: events sdio_irq_work\n| pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n| pc : mwifiex_get_cfp+0xd8/0x15c [mwifiex]\n| lr : mwifiex_get_cfp+0x34/0x15c [mwifiex]\n| sp : ffff8000818b3a70\n| x29: ffff8000818b3a70 x28: ffff000006bfd8a5 x27: 0000000000000004\n| x26: 000000000000002c x25: 0000000000001511 x24: 0000000002e86bc9\n| x23: ffff000006bfd996 x22: 0000000000000004 x21: ffff000007bec000\n| x20: 000000000000002c x19: 0000000000000000 x18: 0000000000000000\n| x17: 000000040044ffff x16: 00500072b5503510 x15: ccc283740681e517\n| x14: 0201000101006d15 x13: 0000000002e8ff43 x12: 002c01000000ffb1\n| x11: 0100000000000000 x10: 02e8ff43002c0100 x9 : 0000ffb100100157\n| x8 : ffff000003d20000 x7 : 00000000000002f1 x6 : 00000000ffffe124\n| x5 : 0000000000000001 x4 : 0000000000000003 x3 : 0000000000000000\n| x2 : 0000000000000000 x1 : 0001000000011001 x0 : 0000000000000000\n| Call trace:\n|  mwifiex_get_cfp+0xd8/0x15c [mwifiex]\n|  mwifiex_parse_single_response_buf+0x1d0/0x504 [mwifiex]\n|  mwifiex_handle_event_ext_scan_report+0x19c/0x2f8 [mwifiex]\n|  mwifiex_process_sta_event+0x298/0xf0c [mwifiex]\n|  mwifiex_process_event+0x110/0x238 [mwifiex]\n|  mwifiex_main_process+0x428/0xa44 [mwifiex]\n|  mwifiex_sdio_interrupt+0x64/0x12c [mwifiex_sdio]\n|  process_sdio_pending_irqs+0x64/0x1b8\n|  sdio_irq_work+0x4c/0x7c\n|  process_one_work+0x148/0x2a0\n|  worker_thread+0x2fc/0x40c\n|  kthread+0x110/0x114\n|  ret_from_fork+0x10/0x20\n| Code: a94153f3 a8c37bfd d50323bf d65f03c0 (f940a000)\n| ---[ end trace 0000000000000000 ]---"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-01-05T10:53:11.877Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/a12cf97cbefa139ef8d95081f2ea047cbbd74b7a"
            },
            {
              "url": "https://git.kernel.org/stable/c/d834433ff313838a259bb6607055ece87b895b66"
            },
            {
              "url": "https://git.kernel.org/stable/c/9813770f25855b866b8ead8155b8806b2db70f6d"
            },
            {
              "url": "https://git.kernel.org/stable/c/cb67b2e51b75f1a17bee7599c8161b96e1808a70"
            },
            {
              "url": "https://git.kernel.org/stable/c/1a05d8d02cfa3540ea5dbd6b39446bd3f515521f"
            },
            {
              "url": "https://git.kernel.org/stable/c/c2618dcb26c7211342b54520b5b148c0d3471c8a"
            },
            {
              "url": "https://git.kernel.org/stable/c/c16916dd6c16fa7e13ca3923eb6b9f50d848ad03"
            },
            {
              "url": "https://git.kernel.org/stable/c/c145eea2f75ff7949392aebecf7ef0a81c1f6c14"
            }
          ],
          "title": "wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-46755",
        "datePublished": "2024-09-18T07:12:14.820Z",
        "dateReserved": "2024-09-11T15:12:18.270Z",
        "dateUpdated": "2026-01-05T10:53:11.877Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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