smb: client: Avoid race in open_cached_dir with lease breaks
In the Linux kernel, the following vulnerability has been resolved: smb: client: Avoid race in open_cached_dir with lease breaks A pre-existing valid cfid returned from find_or_create_cached_dir might race with a lease break, meaning open_cached_dir doesn't consider it valid, and thinks it's newly-constructed. This leaks a dentry reference if the allocation occurs before the queued lease break work runs. Avoid the race by extending holding the cfid_list_lock across find_or_create_cached_dir and when the result is checked.
CVE-2025-37954
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-2025-37954
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": "81ba10959970d15c388bf29866b01b62f387e6a3",
"lessThan": "2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9",
"versionType": "git"
},
{
"status": "affected",
"version": "81ba10959970d15c388bf29866b01b62f387e6a3",
"lessThan": "571dcf3d27b24800c171aea7b5e04ff06d10e2e9",
"versionType": "git"
},
{
"status": "affected",
"version": "81ba10959970d15c388bf29866b01b62f387e6a3",
"lessThan": "2407265dc32bc8cc45b62a612c2a214ba9038e8b",
"versionType": "git"
},
{
"status": "affected",
"version": "81ba10959970d15c388bf29866b01b62f387e6a3",
"lessThan": "3ca02e63edccb78ef3659bebc68579c7224a6ca2",
"versionType": "git"
},
{
"status": "affected",
"version": "436be190fbf81e5d84040dabf9cb7be06a94dc5d",
"versionType": "git"
},
{
"status": "affected",
"version": "6.5.10",
"lessThan": "6.6",
"versionType": "semver"
}
],
"programFiles": [
"fs/smb/client/cached_dir.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": "6.6.91",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.29",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.14.7",
"versionType": "semver",
"lessThanOrEqual": "6.14.*"
},
{
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/client/cached_dir.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-37954
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30499 · Revision 1
- Added to Heist Feed
- Publisher date