drm/nouveau/uvmm: clear the dirty flag when unwinding an OP_UNMAP_SPARSE
In the Linux kernel, the following vulnerability has been resolved: drm/nouveau/uvmm: clear the dirty flag when unwinding an OP_UNMAP_SPARSE A successful OP_UNMAP_SPARSE marks its region dirty with nouveau_uvma_region_dirty() and defers the teardown to nouveau_uvmm_bind_job_cleanup(); it does not remove the region from uvmm->region_mt. If a later op in the job fails, the unwind path never clears reg->dirty (set in one place, cleared nowhere) and sets op->reg = NULL, so cleanup skips the teardown. The region is left in the tree with dirty set and its completion never signalled. Later binds over that range then fail permanently -- -ENOENT or -EINVAL from the dirty checks, or an unkillable wait_for_completion() in bind_validate_region() -- for the lifetime of the uvmm. Clear reg->dirty when the unwind reverts the sparse unmap, restoring the region to the state it was found in.
CVE-2026-89800
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89800
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"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"
}
],
"programFiles": [
"drivers/gpu/drm/nouveau/nouveau_uvmm.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/nouveau/nouveau_uvmm.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89800
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36267 · Revision 1
- Added to Heist Feed
- Publisher date