ksmbd: fix sd_ndr.data memory leak in ksmbd_vfs_set_sd_xattr
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix sd_ndr.data memory leak in ksmbd_vfs_set_sd_xattr ndr_encode_v4_ntacl() allocates sd_ndr.data via kzalloc() at entry. If any subsequent ndr_write_*() call returns error during encoding, the allocated sd_ndr.data won't be freed and causes memory leak. Move kfree(sd_ndr.data) into out label to ensure the buffer gets released on all success and error return paths.
CVE-2026-93812
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-2026-93812
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": "303fff2b8c77a85c62dbde3b27c24b084144c04c",
"lessThan": "306d6f370da7e0e5532dc51c972f4ce101e42431",
"versionType": "git"
},
{
"status": "affected",
"version": "303fff2b8c77a85c62dbde3b27c24b084144c04c",
"lessThan": "dc55270e410ccb4d24e637c13b5c4c25bcd106d7",
"versionType": "git"
},
{
"status": "affected",
"version": "303fff2b8c77a85c62dbde3b27c24b084144c04c",
"lessThan": "c866c3314a6853eb06c7a8bef67f43c8a8bdfb6e",
"versionType": "git"
},
{
"status": "affected",
"version": "303fff2b8c77a85c62dbde3b27c24b084144c04c",
"lessThan": "9b4dec75498fd0a1c9eaea680aef59c9519eb16f",
"versionType": "git"
},
{
"status": "affected",
"version": "303fff2b8c77a85c62dbde3b27c24b084144c04c",
"lessThan": "c521dd78e036b5e0cfd394dd2ff2218890dd9e41",
"versionType": "git"
},
{
"status": "affected",
"version": "303fff2b8c77a85c62dbde3b27c24b084144c04c",
"lessThan": "d4d56b00c7df88cd5751e7415bdfabc9fdbc82a7",
"versionType": "git"
}
],
"programFiles": [
"fs/smb/server/vfs.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": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/server/vfs.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93812
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #8286 · Revision 1
- Added to Heist Feed
- Publisher date