« Volver al listado

CVE-2022-50714

Estado: AplazadaSin puntuar—

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

wifi: mt76: mt7921e: fix rmmod crash in driver reload test

In insmod/rmmod stress test, the following crash dump shows up immediately. The problem is caused by missing mt76_dev in mt7921_pci_remove(). We should make sure the drvdata is ready before probe() finished.

Test steps: 1. insmode 2. do not ifup 3. rmmod quickly (within 1 second)

Detalles técnicos trazas, registros y código del informe original
[168.862789] ==================================================================
[168.862797] BUG: KASAN: user-memory-access in try_to_grab_pending+0x59/0x480
[168.862805] Write of size 8 at addr 0000000000006df0 by task rmmod/5361
[168.862812] CPU: 7 PID: 5361 Comm: rmmod Tainted: G           OE     5.19.0-rc6 #1
[168.862816] Hardware name: Intel(R) Client Systems NUC8i7BEH/NUC8BEB, 05/04/2020
[168.862820] Call Trace:
[168.862822]  <TASK>
[168.862825]  dump_stack_lvl+0x49/0x63
[168.862832]  print_report.cold+0x493/0x6b7
[168.862845]  kasan_report+0xa7/0x120
[168.862857]  kasan_check_range+0x163/0x200
[168.862861]  __kasan_check_write+0x14/0x20
[168.862866]  try_to_grab_pending+0x59/0x480
[168.862870]  __cancel_work_timer+0xbb/0x340
[168.862898]  cancel_work_sync+0x10/0x20
[168.862902]  mt7921_pci_remove+0x61/0x1c0 [mt7921e]
[168.862909]  pci_device_remove+0xa3/0x1d0
[168.862914]  device_remove+0xc4/0x170
[168.862920]  device_release_driver_internal+0x163/0x300
[168.862925]  driver_detach+0xc7/0x1a0
[168.862930]  bus_remove_driver+0xeb/0x2d0
[168.862935]  driver_unregister+0x71/0xb0
[168.862939]  pci_unregister_driver+0x30/0x230
[168.862944]  mt7921_pci_driver_exit+0x10/0x1b [mt7921e]
[168.862949]  __x64_sys_delete_module+0x2f9/0x4b0
[168.862968]  do_syscall_64+0x38/0x90
[168.862973]  entry_SYSCALL_64_after_hwframe+0x63/0xcd

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

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).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-50714",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "1c71e03afe4b457a15e50de40006b927dfc00755",
              "lessThan": "1034d8e08508830161377f136a060e78fc24f2a5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1c71e03afe4b457a15e50de40006b927dfc00755",
              "lessThan": "ccda3ebdae719d348f90563b6719fba4929ae283",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1c71e03afe4b457a15e50de40006b927dfc00755",
              "lessThan": "b5a62d612b7baf6e09884e4de94decb6391d6a9d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7921/pci.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.18",
              "versionType": "semver"
            },
            {
              "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/net/wireless/mediatek/mt76/mt7921/pci.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T13:15:58.030",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1034d8e08508830161377f136a060e78fc24f2a5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b5a62d612b7baf6e09884e4de94decb6391d6a9d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ccda3ebdae719d348f90563b6719fba4929ae283",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921e: fix rmmod crash in driver reload test\n\nIn insmod/rmmod stress test, the following crash dump shows up immediately.\nThe problem is caused by missing mt76_dev in mt7921_pci_remove(). We\nshould make sure the drvdata is ready before probe() finished.\n\n[168.862789] ==================================================================\n[168.862797] BUG: KASAN: user-memory-access in try_to_grab_pending+0x59/0x480\n[168.862805] Write of size 8 at addr 0000000000006df0 by task rmmod/5361\n[168.862812] CPU: 7 PID: 5361 Comm: rmmod Tainted: G           OE     5.19.0-rc6 #1\n[168.862816] Hardware name: Intel(R) Client Systems NUC8i7BEH/NUC8BEB, 05/04/2020\n[168.862820] Call Trace:\n[168.862822]  <TASK>\n[168.862825]  dump_stack_lvl+0x49/0x63\n[168.862832]  print_report.cold+0x493/0x6b7\n[168.862845]  kasan_report+0xa7/0x120\n[168.862857]  kasan_check_range+0x163/0x200\n[168.862861]  __kasan_check_write+0x14/0x20\n[168.862866]  try_to_grab_pending+0x59/0x480\n[168.862870]  __cancel_work_timer+0xbb/0x340\n[168.862898]  cancel_work_sync+0x10/0x20\n[168.862902]  mt7921_pci_remove+0x61/0x1c0 [mt7921e]\n[168.862909]  pci_device_remove+0xa3/0x1d0\n[168.862914]  device_remove+0xc4/0x170\n[168.862920]  device_release_driver_internal+0x163/0x300\n[168.862925]  driver_detach+0xc7/0x1a0\n[168.862930]  bus_remove_driver+0xeb/0x2d0\n[168.862935]  driver_unregister+0x71/0xb0\n[168.862939]  pci_unregister_driver+0x30/0x230\n[168.862944]  mt7921_pci_driver_exit+0x10/0x1b [mt7921e]\n[168.862949]  __x64_sys_delete_module+0x2f9/0x4b0\n[168.862968]  do_syscall_64+0x38/0x90\n[168.862973]  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nTest steps:\n1. insmode\n2. do not ifup\n3. rmmod quickly (within 1 second)"
    }
  ],
  "lastModified": "2026-06-17T05:24:03.147",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}