github - ghsa-j42x-ghgc-wq35

GHSA-J42X-GHGC-WQ35

Vulnerability from github – Published: 2025-10-04 18:31 – Updated: 2025-10-04 18:31

Details

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

drm/msm: fix use-after-free on probe deferral

The bridge counter was never reset when tearing down the DRM device so that stale pointers to deallocated structures would be accessed on the next tear down (e.g. after a second late bind deferral).

Given enough bridges and a few probe deferrals this could currently also lead to data beyond the bridge array being corrupted.

Patchwork: https://patchwork.freedesktop.org/patch/502665/

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50492"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-04T16:15:46Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: fix use-after-free on probe deferral\n\nThe bridge counter was never reset when tearing down the DRM device so\nthat stale pointers to deallocated structures would be accessed on the\nnext tear down (e.g. after a second late bind deferral).\n\nGiven enough bridges and a few probe deferrals this could currently also\nlead to data beyond the bridge array being corrupted.\n\nPatchwork: https://patchwork.freedesktop.org/patch/502665/",
  "id": "GHSA-j42x-ghgc-wq35",
  "modified": "2025-10-04T18:31:14Z",
  "published": "2025-10-04T18:31:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50492"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a30a47741b6df1f9555a0fac6aebb7e8c363bad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6808abdb33bf90330e70a687d29f038507e06ebb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2022-50492 (GCVE-0-2022-50492)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:43 – Updated: 2025-10-04 15:43

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/msm: fix use-after-free on probe deferral The bridge counter was never reset when tearing down the DRM device so that stale pointers to deallocated structures would be accessed on the next tear down (e.g. after a second late bind deferral). Given enough bridges and a few probe deferrals this could currently also lead to data beyond the bridge array being corrupted. Patchwork: https://patchwork.freedesktop.org/patch/502665/

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/0a30a47741b6df1f9…
	https://git.kernel.org/stable/c/6808abdb33bf90330…

Impacted products

Vendor

Product

Version

Linux

Affected: a3376e3ec81c5dd0622cbc187db76d2824d31c1c , < 0a30a47741b6df1f9555a0fac6aebb7e8c363bad (git)
Affected: a3376e3ec81c5dd0622cbc187db76d2824d31c1c , < 6808abdb33bf90330e70a687d29f038507e06ebb (git)

Linux

Affected: 3.12
Unaffected: 0 , < 3.12 (semver)
Unaffected: 6.0.7 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/msm/msm_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0a30a47741b6df1f9555a0fac6aebb7e8c363bad",
              "status": "affected",
              "version": "a3376e3ec81c5dd0622cbc187db76d2824d31c1c",
              "versionType": "git"
            },
            {
              "lessThan": "6808abdb33bf90330e70a687d29f038507e06ebb",
              "status": "affected",
              "version": "a3376e3ec81c5dd0622cbc187db76d2824d31c1c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/msm/msm_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.12"
            },
            {
              "lessThan": "3.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.7",
              "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": "6.0.7",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: fix use-after-free on probe deferral\n\nThe bridge counter was never reset when tearing down the DRM device so\nthat stale pointers to deallocated structures would be accessed on the\nnext tear down (e.g. after a second late bind deferral).\n\nGiven enough bridges and a few probe deferrals this could currently also\nlead to data beyond the bridge array being corrupted.\n\nPatchwork: https://patchwork.freedesktop.org/patch/502665/"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-04T15:43:45.204Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0a30a47741b6df1f9555a0fac6aebb7e8c363bad"
        },
        {
          "url": "https://git.kernel.org/stable/c/6808abdb33bf90330e70a687d29f038507e06ebb"
        }
      ],
      "title": "drm/msm: fix use-after-free on probe deferral",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50492",
    "datePublished": "2025-10-04T15:43:45.204Z",
    "dateReserved": "2025-10-04T15:39:19.463Z",
    "dateUpdated": "2025-10-04T15:43:45.204Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-J42X-GHGC-WQ35

CVE-2022-50492 (GCVE-0-2022-50492)

Tags

Sightings

Nomenclature