{"id":"CVE-2026-89800","title":"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 defer…","summary":"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 defer…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= b88baab828713ce0b49b185444b2ee83bed373a8 < a129b2b875c148aba233ace8447a0c36ca3bae07","Linux >= b88baab828713ce0b49b185444b2ee83bed373a8 < 196ce9e5e93202da097062be24e404984dbc5ac2","Linux >= b88baab828713ce0b49b185444b2ee83bed373a8 < 1101cbfe7f342e5eaaf7444965d4f1215abdac4c","Linux >= b88baab828713ce0b49b185444b2ee83bed373a8 < c60033c172420179b7bbb3d1f843f8dc90164dc5","Linux >= b88baab828713ce0b49b185444b2ee83bed373a8 < 38a62306c4266bcb3cd89e33c7111ee33096ebb3","Linux 6.6"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T11:16:44.877","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89800","references":[{"url":"https://git.kernel.org/stable/c/1101cbfe7f342e5eaaf7444965d4f1215abdac4c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/196ce9e5e93202da097062be24e404984dbc5ac2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/38a62306c4266bcb3cd89e33c7111ee33096ebb3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a129b2b875c148aba233ace8447a0c36ca3bae07","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c60033c172420179b7bbb3d1f843f8dc90164dc5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:54.008Z","epss":0.002,"epssPercentile":0.1016,"slug":"CVE-2026-89800","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}