{"id":"CVE-2026-89800","revision":"b1d6ae5105184025a895982d4b630cf7","records":[{"revision":"b1d6ae5105184025a895982d4b630cf7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89800","aliases":[],"title":"drm/nouveau/uvmm: clear the dirty flag when unwinding an OP_UNMAP_SPARSE","description":"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.","state":0,"publishedAt":"2026-09-16T10:30:33.097+00:00","modifiedAt":"2026-10-19T08:52:54.946+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/nouveau/nouveau_uvmm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b88baab828713ce0b49b185444b2ee83bed373a8\",\n                            \"lessThan\": \"a129b2b875c148aba233ace8447a0c36ca3bae07\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b88baab828713ce0b49b185444b2ee83bed373a8\",\n                            \"lessThan\": \"196ce9e5e93202da097062be24e404984dbc5ac2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b88baab828713ce0b49b185444b2ee83bed373a8\",\n                            \"lessThan\": \"1101cbfe7f342e5eaaf7444965d4f1215abdac4c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b88baab828713ce0b49b185444b2ee83bed373a8\",\n                            \"lessThan\": \"c60033c172420179b7bbb3d1f843f8dc90164dc5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b88baab828713ce0b49b185444b2ee83bed373a8\",\n                            \"lessThan\": \"38a62306c4266bcb3cd89e33c7111ee33096ebb3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/nouveau/nouveau_uvmm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/a129b2b875c148aba233ace8447a0c36ca3bae07","https://git.kernel.org/stable/c/196ce9e5e93202da097062be24e404984dbc5ac2","https://git.kernel.org/stable/c/1101cbfe7f342e5eaaf7444965d4f1215abdac4c","https://git.kernel.org/stable/c/c60033c172420179b7bbb3d1f843f8dc90164dc5","https://git.kernel.org/stable/c/38a62306c4266bcb3cd89e33c7111ee33096ebb3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89800","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89800","identifiers":["CVE-2026-89800"]},"retained":false,"historicalAffected":[]}],"coverage":[]}