CVE-2026-93176

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix dangling pointer in plane reset function amdgpu_dm_plane_drm_plane_reset() frees the old state before allocating a new one. If kzalloc() fails, the function returns without updating the state pointer, leaving a dangling pointer to already freed memory. Fix this by allocating the new state first. On allocation failure, the old state remains untouched and the function safely returns. Found by Linux Verification Center (linuxtesting.org) with SVACE. [adjust for movement around current amd-staging-drm-next]

Severity

HIGH

CVSS score

7.0 (v3.1)

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-17 17:18:13.397000

Last modified

2026-10-30 13:20:59.280000

View original CVE JSON

{
  "id": "CVE-2026-93176",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-17T17:18:13.397",
  "lastModified": "2026-10-30T13:20:59.280",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix dangling pointer in plane reset function\n\namdgpu_dm_plane_drm_plane_reset() frees the old state before allocating\na new one. If kzalloc() fails, the function returns without updating\nthe state pointer, leaving a dangling pointer to already freed memory.\n\nFix this by allocating the new state first. On allocation failure, the\nold state remains untouched and the function safely returns.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\n\n[adjust for movement around current amd-staging-drm-next]"
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "5d945cbcd4b16a29d6470a80dfb19738f9a4319f",
              "lessThan": "154883749cae674fb38e83c1b3a096ce71122229",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "5d945cbcd4b16a29d6470a80dfb19738f9a4319f",
              "lessThan": "cda8af27b787d79eadc4eb8109d9f2e856dadac2",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "5d945cbcd4b16a29d6470a80dfb19738f9a4319f",
              "lessThan": "0999a267bdc13648b6b0db893e7eabe30bc13e7c",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "5d945cbcd4b16a29d6470a80dfb19738f9a4319f",
              "lessThan": "3d8391d3149a1aeb93505a4f9fb9ed8364882c42",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "5d945cbcd4b16a29d6470a80dfb19738f9a4319f",
              "lessThan": "80c0f51aced43d6eaf72f95a2833b0a77cf7880d",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "5d945cbcd4b16a29d6470a80dfb19738f9a4319f",
              "lessThan": "98cad4bd1443975d972f4c7f705980da03722a22",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.0",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.0",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.191",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.114",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.57",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.6",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0999a267bdc13648b6b0db893e7eabe30bc13e7c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/154883749cae674fb38e83c1b3a096ce71122229",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3d8391d3149a1aeb93505a4f9fb9ed8364882c42",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/80c0f51aced43d6eaf72f95a2833b0a77cf7880d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/98cad4bd1443975d972f4c7f705980da03722a22",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cda8af27b787d79eadc4eb8109d9f2e856dadac2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}