smb: Log an error when close_all_cached_dirs fails
In the Linux kernel, the following vulnerability has been resolved: smb: Log an error when close_all_cached_dirs fails Under low-memory conditions, close_all_cached_dirs() can't move the dentries to a separate list to dput() them once the locks are dropped. This will result in a "Dentry still in use" error, so add an error message that makes it clear this is what happened: [ 495.281119] CIFS: VFS: \\otters.example.com\share Out of memory while dropping dentries [ 495.281595] ------------[ cut here ]------------ [ 495.281887] BUG: Dentry ffff888115531138{i=78,n=/} still in use (2) [unmount of cifs cifs] [ 495.282391] WARNING: CPU: 1 PID: 2329 at fs/dcache.c:1536 umount_check+0xc8/0xf0 Also, bail out of looping through all tcons as soon as a single allocation fails, since we're already in trouble, and kmalloc() attempts for subseqeuent tcons are likely to fail just like the first one did.
CVE-2025-38321
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-2025-38321
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": "73934e535cffbda1490fa97d82690a0f9aa73e94",
"lessThan": "b8ced2b9a23a1a2c1e0ed8d0d02512e51bdf38da",
"versionType": "git"
},
{
"status": "affected",
"version": "548812afd96982a76a93ba76c0582ea670c40d9e",
"lessThan": "43f26094d6702e494e800532c3f1606e7a68eb30",
"versionType": "git"
},
{
"status": "affected",
"version": "3fa640d035e5ae526769615c35cb9ed4be6e3662",
"lessThan": "4479db143390bdcadc1561292aab579cdfa9f6c6",
"versionType": "git"
},
{
"status": "affected",
"version": "3fa640d035e5ae526769615c35cb9ed4be6e3662",
"lessThan": "a2182743a8b4969481f64aec4908ff162e8a206c",
"versionType": "git"
},
{
"status": "affected",
"version": "ff4528bbc82d0d90073751f7b49e7b9e9c7e5638",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.64",
"lessThan": "6.6.95",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.12.2",
"lessThan": "6.12.35",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.11.11",
"lessThan": "6.12",
"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": "6.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.95",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.35",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.15.4",
"versionType": "semver",
"lessThanOrEqual": "6.15.*"
},
{
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/client/cached_dir.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-38321
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30558 · Revision 1
- Added to Heist Feed
- Publisher date