{"id":"AZL-101622","summary":"CVE-2026-89800 affecting package kernel 6.6.150.1-1","details":"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-\u003eregion_mt.\n\nIf a later op in the job fails, the unwind path never clears reg-\u003edirty\n(set in one place, cleared nowhere) and sets op-\u003ereg = 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-\u003edirty when the unwind reverts the sparse unmap, restoring the\nregion to the state it was found in.","modified":"2026-09-17T14:15:40.809544579Z","published":"2026-09-16T11:16:44Z","upstream":["CVE-2026-89800"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89800"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.150.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-101622.json"}}],"schema_version":"1.9.0"}