ksmbd: Fix dangling pointer in krb_authenticate
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix dangling pointer in krb_authenticate krb_authenticate frees sess->user and does not set the pointer to NULL. It calls ksmbd_krb5_authenticate to reinitialise sess->user but that function may return without doing so. If that happens then smb2_sess_setup, which calls krb_authenticate, will be accessing free'd memory when it later uses sess->user.
CVE-2025-37778
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-2025-37778
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": "b61f04d5d73c53d183019bafe22fb700a739bac5",
"versionType": "git"
},
{
"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"lessThan": "d5b554bc8d554ed6ddf443d3db2fad9f665cec10",
"versionType": "git"
},
{
"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"lessThan": "1db2451de23e98bc864c6a6e52aa0d82c91cb325",
"versionType": "git"
},
{
"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"lessThan": "6e30c0e10210c714f3d4453dc258d4abcc70364e",
"versionType": "git"
},
{
"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"lessThan": "e83e39a5f6a01a81411a4558a59a10f87aa88dd6",
"versionType": "git"
},
{
"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"lessThan": "1e440d5b25b7efccb3defe542a73c51005799a5f",
"versionType": "git"
}
],
"programFiles": [
"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": "5.15.203",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.135",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.88",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.25",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.14.4",
"versionType": "semver",
"lessThanOrEqual": "6.14.*"
},
{
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/server/smb2pdu.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-37778
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #30475 · Revision 1
- Added to Heist Feed
- Publisher date