CVE-2022-50378

Estado: ModificadaAlta (7.8)—

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

drm/meson: reorder driver deinit sequence to fix use-after-free bug

Unloading the driver triggers the following KASAN warning:

[ +0.006275] ============================================================= [ +0.000029] BUG: KASAN: use-after-free in __list_del_entry_valid+0xe0/0x1a0 [ +0.000026] Read of size 8 at addr ffff000020c395e0 by task rmmod/2695

[ +0.000018] Allocated by task 0: [ +0.000007] (stack is not available)

[ +0.000014] The buggy address belongs to the object at ffff000020c39000 ---truncated---

Detalles técnicos trazas, registros y código del informe original

[  +0.000019] CPU: 5 PID: 2695 Comm: rmmod Tainted: G         C O      5.19.0-rc6-lrmbkasan+ #1
[  +0.000013] Hardware name: Hardkernel ODROID-N2Plus (DT)
[  +0.000008] Call trace:
[  +0.000007]  dump_backtrace+0x1ec/0x280
[  +0.000013]  show_stack+0x24/0x80
[  +0.000008]  dump_stack_lvl+0x98/0xd4
[  +0.000011]  print_address_description.constprop.0+0x80/0x520
[  +0.000011]  print_report+0x128/0x260
[  +0.000007]  kasan_report+0xb8/0xfc
[  +0.000008]  __asan_report_load8_noabort+0x3c/0x50
[  +0.000010]  __list_del_entry_valid+0xe0/0x1a0
[  +0.000009]  drm_atomic_private_obj_fini+0x30/0x200 [drm]
[  +0.000172]  drm_bridge_detach+0x94/0x260 [drm]
[  +0.000145]  drm_encoder_cleanup+0xa4/0x290 [drm]
[  +0.000144]  drm_mode_config_cleanup+0x118/0x740 [drm]
[  +0.000143]  drm_mode_config_init_release+0x1c/0x2c [drm]
[  +0.000144]  drm_managed_release+0x170/0x414 [drm]
[  +0.000142]  drm_dev_put.part.0+0xc0/0x124 [drm]
[  +0.000143]  drm_dev_put+0x20/0x30 [drm]
[  +0.000142]  meson_drv_unbind+0x1d8/0x2ac [meson_drm]
[  +0.000028]  take_down_aggregate_device+0xb0/0x160
[  +0.000016]  component_del+0x18c/0x360
[  +0.000009]  meson_dw_hdmi_remove+0x28/0x40 [meson_dw_hdmi]
[  +0.000015]  platform_remove+0x64/0xb0
[  +0.000009]  device_remove+0xb8/0x154
[  +0.000009]  device_release_driver_internal+0x398/0x5b0
[  +0.000009]  driver_detach+0xac/0x1b0
[  +0.000009]  bus_remove_driver+0x158/0x29c
[  +0.000009]  driver_unregister+0x70/0xb0
[  +0.000008]  platform_driver_unregister+0x20/0x2c
[  +0.000008]  meson_dw_hdmi_platform_driver_exit+0x1c/0x30 [meson_dw_hdmi]
[  +0.000012]  __do_sys_delete_module+0x288/0x400
[  +0.000011]  __arm64_sys_delete_module+0x5c/0x80
[  +0.000009]  invoke_syscall+0x74/0x260
[  +0.000009]  el0_svc_common.constprop.0+0xcc/0x260
[  +0.000009]  do_el0_svc+0x50/0x70
[  +0.000007]  el0_svc+0x68/0x1a0
[  +0.000012]  el0t_64_sync_handler+0x11c/0x150
[  +0.000008]  el0t_64_sync+0x18c/0x190

[  +0.000011] Freed by task 2695:
[  +0.000008]  kasan_save_stack+0x2c/0x5c
[  +0.000011]  kasan_set_track+0x2c/0x40
[  +0.000008]  kasan_set_free_info+0x28/0x50
[  +0.000009]  ____kasan_slab_free+0x128/0x1d4
[  +0.000008]  __kasan_slab_free+0x18/0x24
[  +0.000007]  slab_free_freelist_hook+0x108/0x230
[  +0.000011]  kfree+0x110/0x35c
[  +0.000008]  release_nodes+0xf0/0x16c
[  +0.000009]  devres_release_group+0x180/0x270
[  +0.000008]  component_unbind+0x128/0x1e0
[  +0.000010]  component_unbind_all+0x1b8/0x264
[  +0.000009]  meson_drv_unbind+0x1a0/0x2ac [meson_drm]
[  +0.000025]  take_down_aggregate_device+0xb0/0x160
[  +0.000009]  component_del+0x18c/0x360
[  +0.000009]  meson_dw_hdmi_remove+0x28/0x40 [meson_dw_hdmi]
[  +0.000012]  platform_remove+0x64/0xb0
[  +0.000008]  device_remove+0xb8/0x154
[  +0.000009]  device_release_driver_internal+0x398/0x5b0
[  +0.000009]  driver_detach+0xac/0x1b0
[  +0.000009]  bus_remove_driver+0x158/0x29c
[  +0.000008]  driver_unregister+0x70/0xb0
[  +0.000008]  platform_driver_unregister+0x20/0x2c
[  +0.000008]  meson_dw_hdmi_platform_driver_exit+0x1c/0x30 [meson_dw_hdmi]
[  +0.000011]  __do_sys_delete_module+0x288/0x400
[  +0.000010]  __arm64_sys_delete_module+0x5c/0x80
[  +0.000008]  invoke_syscall+0x74/0x260
[  +0.000008]  el0_svc_common.constprop.0+0xcc/0x260
[  +0.000008]  do_el0_svc+0x50/0x70
[  +0.000007]  el0_svc+0x68/0x1a0
[  +0.000009]  el0t_64_sync_handler+0x11c/0x150
[  +0.000009]  el0t_64_sync+0x18c/0x190

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.16%
Percentil entre todas las CVEs puntuadas: 4
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation75 %
Impacto principalT1059 Command and Scripting Interpreterexecution45 %

CVE-2022-50378 es un use-after-free (CWE-416) en el kernel Linux que requiere acceso local (AV:L, PR:L). La explotación es T1068 por escalada de privilegios. El impacto potencial es ejecución de código arbitrario (T1059), aunque el reporte muestra un crash; la vulnerabilidad podría permitir ejecució

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

Execution Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Behavior Prevention on Endpoint

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-416
CWE-416

Referencias

JSON original (NVD)

Mostrar

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  "id": "CVE-2022-50378",
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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            {
              "automatable": "no"
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            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-01-14T18:46:57.623171Z"
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  "affected": [
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      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "e78ad18ba3658fbc8c63629e034b68d8e51acbf1",
              "lessThan": "d76ff04a72f90767455059c8239b06042cd0ed23",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e78ad18ba3658fbc8c63629e034b68d8e51acbf1",
              "lessThan": "9190d287f7a6b02b50b510045b0edf448ed68e88",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e78ad18ba3658fbc8c63629e034b68d8e51acbf1",
              "lessThan": "9d33348513c36337f91f1991da23f41514d4de39",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e78ad18ba3658fbc8c63629e034b68d8e51acbf1",
              "lessThan": "31c519981eb141c7ec39bfd5be25d35f02edb868",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2777970add401e92d531a16dda30d84ec0831226",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5.10.4",
              "lessThan": "5.11",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/meson/meson_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": "5.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/meson/meson_drv.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-09-18T14:15:36.513",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/31c519981eb141c7ec39bfd5be25d35f02edb868",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9190d287f7a6b02b50b510045b0edf448ed68e88",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9d33348513c36337f91f1991da23f41514d4de39",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d76ff04a72f90767455059c8239b06042cd0ed23",
      "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/meson: reorder driver deinit sequence to fix use-after-free bug\n\nUnloading the driver triggers the following KASAN warning:\n\n[  +0.006275] =============================================================\n[  +0.000029] BUG: KASAN: use-after-free in __list_del_entry_valid+0xe0/0x1a0\n[  +0.000026] Read of size 8 at addr ffff000020c395e0 by task rmmod/2695\n\n[  +0.000019] CPU: 5 PID: 2695 Comm: rmmod Tainted: G         C O      5.19.0-rc6-lrmbkasan+ #1\n[  +0.000013] Hardware name: Hardkernel ODROID-N2Plus (DT)\n[  +0.000008] Call trace:\n[  +0.000007]  dump_backtrace+0x1ec/0x280\n[  +0.000013]  show_stack+0x24/0x80\n[  +0.000008]  dump_stack_lvl+0x98/0xd4\n[  +0.000011]  print_address_description.constprop.0+0x80/0x520\n[  +0.000011]  print_report+0x128/0x260\n[  +0.000007]  kasan_report+0xb8/0xfc\n[  +0.000008]  __asan_report_load8_noabort+0x3c/0x50\n[  +0.000010]  __list_del_entry_valid+0xe0/0x1a0\n[  +0.000009]  drm_atomic_private_obj_fini+0x30/0x200 [drm]\n[  +0.000172]  drm_bridge_detach+0x94/0x260 [drm]\n[  +0.000145]  drm_encoder_cleanup+0xa4/0x290 [drm]\n[  +0.000144]  drm_mode_config_cleanup+0x118/0x740 [drm]\n[  +0.000143]  drm_mode_config_init_release+0x1c/0x2c [drm]\n[  +0.000144]  drm_managed_release+0x170/0x414 [drm]\n[  +0.000142]  drm_dev_put.part.0+0xc0/0x124 [drm]\n[  +0.000143]  drm_dev_put+0x20/0x30 [drm]\n[  +0.000142]  meson_drv_unbind+0x1d8/0x2ac [meson_drm]\n[  +0.000028]  take_down_aggregate_device+0xb0/0x160\n[  +0.000016]  component_del+0x18c/0x360\n[  +0.000009]  meson_dw_hdmi_remove+0x28/0x40 [meson_dw_hdmi]\n[  +0.000015]  platform_remove+0x64/0xb0\n[  +0.000009]  device_remove+0xb8/0x154\n[  +0.000009]  device_release_driver_internal+0x398/0x5b0\n[  +0.000009]  driver_detach+0xac/0x1b0\n[  +0.000009]  bus_remove_driver+0x158/0x29c\n[  +0.000009]  driver_unregister+0x70/0xb0\n[  +0.000008]  platform_driver_unregister+0x20/0x2c\n[  +0.000008]  meson_dw_hdmi_platform_driver_exit+0x1c/0x30 [meson_dw_hdmi]\n[  +0.000012]  __do_sys_delete_module+0x288/0x400\n[  +0.000011]  __arm64_sys_delete_module+0x5c/0x80\n[  +0.000009]  invoke_syscall+0x74/0x260\n[  +0.000009]  el0_svc_common.constprop.0+0xcc/0x260\n[  +0.000009]  do_el0_svc+0x50/0x70\n[  +0.000007]  el0_svc+0x68/0x1a0\n[  +0.000012]  el0t_64_sync_handler+0x11c/0x150\n[  +0.000008]  el0t_64_sync+0x18c/0x190\n\n[  +0.000018] Allocated by task 0:\n[  +0.000007] (stack is not available)\n\n[  +0.000011] Freed by task 2695:\n[  +0.000008]  kasan_save_stack+0x2c/0x5c\n[  +0.000011]  kasan_set_track+0x2c/0x40\n[  +0.000008]  kasan_set_free_info+0x28/0x50\n[  +0.000009]  ____kasan_slab_free+0x128/0x1d4\n[  +0.000008]  __kasan_slab_free+0x18/0x24\n[  +0.000007]  slab_free_freelist_hook+0x108/0x230\n[  +0.000011]  kfree+0x110/0x35c\n[  +0.000008]  release_nodes+0xf0/0x16c\n[  +0.000009]  devres_release_group+0x180/0x270\n[  +0.000008]  component_unbind+0x128/0x1e0\n[  +0.000010]  component_unbind_all+0x1b8/0x264\n[  +0.000009]  meson_drv_unbind+0x1a0/0x2ac [meson_drm]\n[  +0.000025]  take_down_aggregate_device+0xb0/0x160\n[  +0.000009]  component_del+0x18c/0x360\n[  +0.000009]  meson_dw_hdmi_remove+0x28/0x40 [meson_dw_hdmi]\n[  +0.000012]  platform_remove+0x64/0xb0\n[  +0.000008]  device_remove+0xb8/0x154\n[  +0.000009]  device_release_driver_internal+0x398/0x5b0\n[  +0.000009]  driver_detach+0xac/0x1b0\n[  +0.000009]  bus_remove_driver+0x158/0x29c\n[  +0.000008]  driver_unregister+0x70/0xb0\n[  +0.000008]  platform_driver_unregister+0x20/0x2c\n[  +0.000008]  meson_dw_hdmi_platform_driver_exit+0x1c/0x30 [meson_dw_hdmi]\n[  +0.000011]  __do_sys_delete_module+0x288/0x400\n[  +0.000010]  __arm64_sys_delete_module+0x5c/0x80\n[  +0.000008]  invoke_syscall+0x74/0x260\n[  +0.000008]  el0_svc_common.constprop.0+0xcc/0x260\n[  +0.000008]  do_el0_svc+0x50/0x70\n[  +0.000007]  el0_svc+0x68/0x1a0\n[  +0.000009]  el0t_64_sync_handler+0x11c/0x150\n[  +0.000009]  el0t_64_sync+0x18c/0x190\n\n[  +0.000014] The buggy address belongs to the object at ffff000020c39000\n---truncated---"
    }
  ],
  "lastModified": "2026-08-15T13:17:33.227",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "40F611EF-A301-4CF2-9736-61BD75921A2C",
              "versionEndExcluding": "5.15.75",
              "versionStartIncluding": "4.10"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "19B4C3A4-E5C3-41DC-BB14-BE72858E7D35",
              "versionEndExcluding": "5.19.17",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5BCD8201-B847-4442-B894-70D430128DEF",
              "versionEndExcluding": "6.0.3",
              "versionStartIncluding": "6.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}