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CVE-2026-31488 drm/amd/display: Do not skip unrelated mode changes in DSC validation

🗓️ 22 Apr 2026 13:54:12Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 32 Views

Fixes DSC validation not dropping unrelated mode changes in amdgpu, preventing leak and use-after-free.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c",
      "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h",
      "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c"
    ],
    "versions": [
      {
        "version": "17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b",
        "lessThan": "da1d0ed31e9802fd99384f43cc63678a5a11cb41",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b",
        "lessThan": "21159d8b335a6b9f44cbb506733013a902ae2da4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b",
        "lessThan": "10862e344b4d6434642a48c87d765813fc0b0ba7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b",
        "lessThan": "8a5edc97fd9c6415ff2eff872748439a97e3c3d8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b",
        "lessThan": "111208b5b7ebcdadb3f922cc52d8425f0fa91b33",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b",
        "lessThan": "aed3d041ab061ec8a64f50a3edda0f4db7280025",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c",
      "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h",
      "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c"
    ],
    "versions": [
      {
        "version": "5.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.18",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.175",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.140",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.80",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.21",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.11",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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