GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2022-50714 (GCVE-0-2022-50714)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:22 – Updated: 2026-05-11 19:24
VLAI
Title
wifi: mt76: mt7921e: fix rmmod crash in driver reload test
Summary
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. [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 Test steps: 1. insmode 2. do not ifup 3. rmmod quickly (within 1 second)
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1c71e03afe4b457a15e50de40006b927dfc00755 , < 1034d8e08508830161377f136a060e78fc24f2a5 (git)
Affected: 1c71e03afe4b457a15e50de40006b927dfc00755 , < ccda3ebdae719d348f90563b6719fba4929ae283 (git)
Affected: 1c71e03afe4b457a15e50de40006b927dfc00755 , < b5a62d612b7baf6e09884e4de94decb6391d6a9d (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7921/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1034d8e08508830161377f136a060e78fc24f2a5",
              "status": "affected",
              "version": "1c71e03afe4b457a15e50de40006b927dfc00755",
              "versionType": "git"
            },
            {
              "lessThan": "ccda3ebdae719d348f90563b6719fba4929ae283",
              "status": "affected",
              "version": "1c71e03afe4b457a15e50de40006b927dfc00755",
              "versionType": "git"
            },
            {
              "lessThan": "b5a62d612b7baf6e09884e4de94decb6391d6a9d",
              "status": "affected",
              "version": "1c71e03afe4b457a15e50de40006b927dfc00755",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7921/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.17",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.3",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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]  \u003cTASK\u003e\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)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:24:05.961Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1034d8e08508830161377f136a060e78fc24f2a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/ccda3ebdae719d348f90563b6719fba4929ae283"
        },
        {
          "url": "https://git.kernel.org/stable/c/b5a62d612b7baf6e09884e4de94decb6391d6a9d"
        }
      ],
      "title": "wifi: mt76: mt7921e: fix rmmod crash in driver reload test",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50714",
    "datePublished": "2025-12-24T12:22:39.059Z",
    "dateReserved": "2025-12-24T12:20:40.329Z",
    "dateUpdated": "2026-05-11T19:24:05.961Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50714",
      "date": "2026-09-16",
      "epss": "0.00236",
      "percentile": "0.14776"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50714\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:15:58.030\",\"lastModified\":\"2026-06-17T05:24:03.147\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"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]  \u003cTASK\u003e\\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)\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/wireless/mediatek/mt76/mt7921/pci.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1c71e03afe4b457a15e50de40006b927dfc00755\",\"lessThan\":\"1034d8e08508830161377f136a060e78fc24f2a5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1c71e03afe4b457a15e50de40006b927dfc00755\",\"lessThan\":\"ccda3ebdae719d348f90563b6719fba4929ae283\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1c71e03afe4b457a15e50de40006b927dfc00755\",\"lessThan\":\"b5a62d612b7baf6e09884e4de94decb6391d6a9d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/wireless/mediatek/mt76/mt7921/pci.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.18\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.18\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.19.17\",\"lessThanOrEqual\":\"5.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0.3\",\"lessThanOrEqual\":\"6.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"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\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:56:30+00:00",
      "cve": "CVE-2022-50714",
      "id": "CVE-2022-50714",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "321",
      "product_status:known_affected": "38",
      "product_status:known_not_affected": "118",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Denial of Service in mt7921e driver during module unload",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50714.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-03T00:36:47Z",
      "cve": "CVE-2022-50714",
      "id": "CVE-2022-50714",
      "initial_release_date": "2025-12-25T01:05:09Z",
      "product_status:known_affected": "382",
      "product_status:known_not_affected": "485",
      "product_status:recommended": "134",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50714",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50714.json",
      "version": "25"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.