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CVE-2024-57926

Estado: ModificadaAlta (7.8)—

In the Linux kernel, the following vulnerability has been resolved:

drm/mediatek: Set private->all_drm_private[i]->drm to NULL if mtk_drm_bind returns err

The pointer need to be set to NULL, otherwise KASAN complains about use-after-free. Because in mtk_drm_bind, all private's drm are set as follows.

And drm will be released by drm_dev_put in case mtk_drm_kms_init returns failure. However, the shutdown path still accesses the previous allocated memory in drm_atomic_helper_shutdown.

Detalles técnicos trazas, registros y código del informe original
private->all_drm_private[i]->drm = drm;

[   84.874820] watchdog: watchdog0: watchdog did not stop!
[   86.512054] ==================================================================
[   86.513162] BUG: KASAN: use-after-free in drm_atomic_helper_shutdown+0x33c/0x378
[   86.514258] Read of size 8 at addr ffff0000d46fc068 by task shutdown/1
[   86.515213]
[   86.515455] CPU: 1 UID: 0 PID: 1 Comm: shutdown Not tainted 6.13.0-rc1-mtk+gfa1a78e5d24b-dirty #55
[   86.516752] Hardware name: Unknown Product/Unknown Product, BIOS 2022.10 10/01/2022
[   86.517960] Call trace:
[   86.518333]  show_stack+0x20/0x38 (C)
[   86.518891]  dump_stack_lvl+0x90/0xd0
[   86.519443]  print_report+0xf8/0x5b0
[   86.519985]  kasan_report+0xb4/0x100
[   86.520526]  __asan_report_load8_noabort+0x20/0x30
[   86.521240]  drm_atomic_helper_shutdown+0x33c/0x378
[   86.521966]  mtk_drm_shutdown+0x54/0x80
[   86.522546]  platform_shutdown+0x64/0x90
[   86.523137]  device_shutdown+0x260/0x5b8
[   86.523728]  kernel_restart+0x78/0xf0
[   86.524282]  __do_sys_reboot+0x258/0x2f0
[   86.524871]  __arm64_sys_reboot+0x90/0xd8
[   86.525473]  invoke_syscall+0x74/0x268
[   86.526041]  el0_svc_common.constprop.0+0xb0/0x240
[   86.526751]  do_el0_svc+0x4c/0x70
[   86.527251]  el0_svc+0x4c/0xc0
[   86.527719]  el0t_64_sync_handler+0x144/0x168
[   86.528367]  el0t_64_sync+0x198/0x1a0
[   86.528920]
[   86.529157] The buggy address belongs to the physical page:
[   86.529972] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff0000d46fd4d0 pfn:0x1146fc
[   86.531319] flags: 0xbfffc0000000000(node=0|zone=2|lastcpupid=0xffff)
[   86.532267] raw: 0bfffc0000000000 0000000000000000 dead000000000122 0000000000000000
[   86.533390] raw: ffff0000d46fd4d0 0000000000000000 00000000ffffffff 0000000000000000
[   86.534511] page dumped because: kasan: bad access detected
[   86.535323]
[   86.535559] Memory state around the buggy address:
[   86.536265]  ffff0000d46fbf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   86.537314]  ffff0000d46fbf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   86.538363] >ffff0000d46fc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   86.544733]                                                           ^
[   86.551057]  ffff0000d46fc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   86.557510]  ffff0000d46fc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   86.563928] ==================================================================
[   86.571093] Disabling lock debugging due to kernel taint
[   86.577642] Unable to handle kernel paging request at virtual address e0e9c0920000000b
[   86.581834] KASAN: maybe wild-memory-access in range [0x0752049000000058-0x075204900000005f]
...

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad local (AV:L, PR:L) sin interacción (UI:N) que causa use-after-free en el kernel. El atacante con permisos locales provoca DoS por crash de kernel al accionar reboot, no ejecución de comandos.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2024-57926",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-57926",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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            {
              "automatable": "no"
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            {
              "technicalImpact": "total"
            }
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          "version": "2.0.3",
          "timestamp": "2025-02-11T15:40:53.635333Z"
        }
      }
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    "cvssMetricV31": [
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        "type": "Primary",
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          "attackVector": "LOCAL",
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          "integrityImpact": "HIGH",
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        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      },
      {
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        "cvssData": {
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          "integrityImpact": "HIGH",
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          "attackComplexity": "LOW",
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    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
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          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "1ef7ed48356cd5f9af2b7671956991b658d8c2ba",
              "lessThan": "7083b93e9755d60f0c2bcaa9d064308108280534",
              "versionType": "git"
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            {
              "status": "affected",
              "version": "1ef7ed48356cd5f9af2b7671956991b658d8c2ba",
              "lessThan": "078b2ff7da200b7532398e668eef723ad40fb516",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1ef7ed48356cd5f9af2b7671956991b658d8c2ba",
              "lessThan": "36684e9d88a2e2401ae26715a2e217cb4295cea7",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/mediatek/mtk_drm_drv.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.4",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.72",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.10",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/mediatek/mtk_drm_drv.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-01-19T12:15:26.713",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/078b2ff7da200b7532398e668eef723ad40fb516",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/36684e9d88a2e2401ae26715a2e217cb4295cea7",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7083b93e9755d60f0c2bcaa9d064308108280534",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: Set private->all_drm_private[i]->drm to NULL if mtk_drm_bind returns err\n\nThe pointer need to be set to NULL, otherwise KASAN complains about\nuse-after-free. Because in mtk_drm_bind, all private's drm are set\nas follows.\n\nprivate->all_drm_private[i]->drm = drm;\n\nAnd drm will be released by drm_dev_put in case mtk_drm_kms_init returns\nfailure. However, the shutdown path still accesses the previous allocated\nmemory in drm_atomic_helper_shutdown.\n\n[   84.874820] watchdog: watchdog0: watchdog did not stop!\n[   86.512054] ==================================================================\n[   86.513162] BUG: KASAN: use-after-free in drm_atomic_helper_shutdown+0x33c/0x378\n[   86.514258] Read of size 8 at addr ffff0000d46fc068 by task shutdown/1\n[   86.515213]\n[   86.515455] CPU: 1 UID: 0 PID: 1 Comm: shutdown Not tainted 6.13.0-rc1-mtk+gfa1a78e5d24b-dirty #55\n[   86.516752] Hardware name: Unknown Product/Unknown Product, BIOS 2022.10 10/01/2022\n[   86.517960] Call trace:\n[   86.518333]  show_stack+0x20/0x38 (C)\n[   86.518891]  dump_stack_lvl+0x90/0xd0\n[   86.519443]  print_report+0xf8/0x5b0\n[   86.519985]  kasan_report+0xb4/0x100\n[   86.520526]  __asan_report_load8_noabort+0x20/0x30\n[   86.521240]  drm_atomic_helper_shutdown+0x33c/0x378\n[   86.521966]  mtk_drm_shutdown+0x54/0x80\n[   86.522546]  platform_shutdown+0x64/0x90\n[   86.523137]  device_shutdown+0x260/0x5b8\n[   86.523728]  kernel_restart+0x78/0xf0\n[   86.524282]  __do_sys_reboot+0x258/0x2f0\n[   86.524871]  __arm64_sys_reboot+0x90/0xd8\n[   86.525473]  invoke_syscall+0x74/0x268\n[   86.526041]  el0_svc_common.constprop.0+0xb0/0x240\n[   86.526751]  do_el0_svc+0x4c/0x70\n[   86.527251]  el0_svc+0x4c/0xc0\n[   86.527719]  el0t_64_sync_handler+0x144/0x168\n[   86.528367]  el0t_64_sync+0x198/0x1a0\n[   86.528920]\n[   86.529157] The buggy address belongs to the physical page:\n[   86.529972] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff0000d46fd4d0 pfn:0x1146fc\n[   86.531319] flags: 0xbfffc0000000000(node=0|zone=2|lastcpupid=0xffff)\n[   86.532267] raw: 0bfffc0000000000 0000000000000000 dead000000000122 0000000000000000\n[   86.533390] raw: ffff0000d46fd4d0 0000000000000000 00000000ffffffff 0000000000000000\n[   86.534511] page dumped because: kasan: bad access detected\n[   86.535323]\n[   86.535559] Memory state around the buggy address:\n[   86.536265]  ffff0000d46fbf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n[   86.537314]  ffff0000d46fbf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n[   86.538363] >ffff0000d46fc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n[   86.544733]                                                           ^\n[   86.551057]  ffff0000d46fc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n[   86.557510]  ffff0000d46fc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n[   86.563928] ==================================================================\n[   86.571093] Disabling lock debugging due to kernel taint\n[   86.577642] Unable to handle kernel paging request at virtual address e0e9c0920000000b\n[   86.581834] KASAN: maybe wild-memory-access in range [0x0752049000000058-0x075204900000005f]\n..."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/mediatek: Establecer private->all_drm_private[i]->drm en NULL si mtk_drm_bind devuelve err El puntero debe establecerse en NULL, de lo contrario KASAN se queja de use-after-free. Porque en mtk_drm_bind, todos los drm de private se establecen de la siguiente manera. private->all_drm_private[i]->drm = drm; Y drm será liberado por drm_dev_put en caso de que mtk_drm_kms_init devuelva un error. Sin embargo, la ruta de apagado aún accede a la memoria asignada previamente en drm_atomic_helper_shutdown. [ 84.874820] watchdog: watchdog0: ¡watchdog no se detuvo! [ 86.512054] ======================================================================= [ 86.513162] ERROR: KASAN: use-after-free en drm_atomic_helper_shutdown+0x33c/0x378 [ 86.514258] Lectura de tamaño 8 en la dirección ffff0000d46fc068 por la tarea shutdown/1 [ 86.515213] [ 86.515455] CPU: 1 UID: 0 PID: 1 Comm: shutdown No contaminado 6.13.0-rc1-mtk+gfa1a78e5d24b-dirty #55 [ 86.516752] Nombre del hardware: Producto desconocido/Producto desconocido, BIOS 2022.10 10/01/2022 [ 86.517960] Rastreo de llamadas: [ 86.518333] show_stack+0x20/0x38 (C) [ 86.518891] dump_stack_lvl+0x90/0xd0 [ 86.519443] print_report+0xf8/0x5b0 [ 86.519985] kasan_report+0xb4/0x100 [ 86.520526] __asan_report_load8_noabort+0x20/0x30 [ 86.521240] drm_atomic_helper_shutdown+0x33c/0x378 [ 86.521966] apagado_drm_mtk+0x54/0x80 [ 86.522546] apagado_plataforma+0x64/0x90 [ 86.523137] apagado_dispositivo+0x260/0x5b8 [ 86.523728] reinicio_núcleo+0x78/0xf0 [ 86.524282] __do_sys_reboot+0x258/0x2f0 [ 86.524871] __arm64_sys_reboot+0x90/0xd8 [ 86.525473] invocar_syscall+0x74/0x268 [ 86.526041] el0_svc_common.constprop.0+0xb0/0x240 [ 86.526751] do_el0_svc+0x4c/0x70 [ 86.527251] el0_svc+0x4c/0xc0 [ 86.527719] el0t_64_sync_handler+0x144/0x168 [ 86.528367] el0t_64_sync+0x198/0x1a0 [ 86.528920] [ 86.529157] La dirección con errores pertenece a la página física: [ 86.529972] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff0000d46fd4d0 pfn:0x1146fc [86.531319] indicadores: 0xbfffc0000000000(node=0|zone=2|lastcpupid=0xffff) [86.532267] sin procesar: 0bfffc0000000000 0000000000000000 dead000000000122 0000000000000000 [86.533390] sin procesar: ffff0000d46fd4d0 000000000000000 00000000ffffffff 0000000000000000 [86.534511] página volcada porque: kasan: se detectó un acceso incorrecto [ 86.535323] [ 86.535559] Estado de la memoria alrededor de la dirección con errores: [ 86.536265] ffff0000d46fbf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 86.537314] ffff0000d46fbf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 86.538363] >ffff0000d46fc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 86.544733] ^ [ 86.551057] ffff0000d46fc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 86.557510] ffff0000d46fc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 86.563928] ===================================================================== [ 86.571093] Deshabilitando la depuración de bloqueo debido a una corrupción del kernel [ 86.577642] No se puede gestionar la solicitud de paginación del kernel en la dirección virtual e0e9c0920000000b [ 86.581834] KASAN: tal vez acceso a memoria salvaje en el rango [0x0752049000000058-0x075204900000005f] ..."
    }
  ],
  "lastModified": "2026-06-17T08:14:14.957",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8963EE3B-CE8E-4E38-9781-95B490EAC04B",
              "versionEndExcluding": "6.6.72",
              "versionStartIncluding": "6.4"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "02D604F6-10D1-4F7B-A022-0888406A1121",
              "versionEndExcluding": "6.12.10",
              "versionStartIncluding": "6.7"
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              "criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}