ksmbd: fix use-after-free in kerberos authentication
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in kerberos authentication Setting sess->user = NULL was introduced to fix the dangling pointer created by ksmbd_free_user. However, it is possible another thread could be operating on the session and make use of sess->user after it has been passed to ksmbd_free_user but before sess->user is set to NULL.
CVE-2025-37924
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-2025-37924
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": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"lessThan": "e34a33d5d7e87399af0a138bb32f6a3e95dd83d2",
"versionType": "git"
},
{
"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"lessThan": "b447463562238428503cfba1c913261047772f90",
"versionType": "git"
},
{
"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"lessThan": "e18c616718018dfc440e4a2d2b94e28fe91b1861",
"versionType": "git"
},
{
"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"lessThan": "28c756738af44a404a91b77830d017bb0c525890",
"versionType": "git"
},
{
"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"lessThan": "e86e9134e1d1c90a960dd57f59ce574d27b9a124",
"versionType": "git"
}
],
"programFiles": [
"fs/smb/server/auth.c",
"fs/smb/server/smb2pdu.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.138",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.90",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.28",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.14.6",
"versionType": "semver",
"lessThanOrEqual": "6.14.*"
},
{
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/server/auth.c",
"fs/smb/server/smb2pdu.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-37924
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #30494 · Revision 1
- Added to Heist Feed
- Publisher date