CVE-2026-89800

{
  "id": "CVE-2026-89800",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-16T11:16:44.877",
  "lastModified": "2026-10-19T09:18:23.787",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/uvmm: clear the dirty flag when unwinding an OP_UNMAP_SPARSE\n\nA successful OP_UNMAP_SPARSE marks its region dirty with\nnouveau_uvma_region_dirty() and defers the teardown to\nnouveau_uvmm_bind_job_cleanup(); it does not remove the region from\nuvmm->region_mt.\n\nIf a later op in the job fails, the unwind path never clears reg->dirty\n(set in one place, cleared nowhere) and sets op->reg = NULL, so cleanup\nskips the teardown. The region is left in the tree with dirty set and its\ncompletion never signalled. Later binds over that range then fail\npermanently -- -ENOENT or -EINVAL from the dirty checks, or an unkillable\nwait_for_completion() in bind_validate_region() -- for the lifetime of\nthe uvmm.\n\nClear reg->dirty when the unwind reverts the sparse unmap, restoring the\nregion to the state it was found in."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/gpu/drm/nouveau/nouveau_uvmm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "b88baab828713ce0b49b185444b2ee83bed373a8",
              "lessThan": "a129b2b875c148aba233ace8447a0c36ca3bae07",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "b88baab828713ce0b49b185444b2ee83bed373a8",
              "lessThan": "196ce9e5e93202da097062be24e404984dbc5ac2",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "b88baab828713ce0b49b185444b2ee83bed373a8",
              "lessThan": "1101cbfe7f342e5eaaf7444965d4f1215abdac4c",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "b88baab828713ce0b49b185444b2ee83bed373a8",
              "lessThan": "c60033c172420179b7bbb3d1f843f8dc90164dc5",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "b88baab828713ce0b49b185444b2ee83bed373a8",
              "lessThan": "38a62306c4266bcb3cd89e33c7111ee33096ebb3",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/gpu/drm/nouveau/nouveau_uvmm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.6",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.6",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.157",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.110",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.51",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.5",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1101cbfe7f342e5eaaf7444965d4f1215abdac4c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/196ce9e5e93202da097062be24e404984dbc5ac2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/38a62306c4266bcb3cd89e33c7111ee33096ebb3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a129b2b875c148aba233ace8447a0c36ca3bae07",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c60033c172420179b7bbb3d1f843f8dc90164dc5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}