High
smb: client: mask server-provided mode to 07777 in modefromsid
In the Linux kernel, the following vulnerability has been resolved: smb: client: mask server-provided mode to 07777 in modefromsid When modefromsid is active, parse_dacl() applies the server-provided sub_auth[2] value from the NFS mode SID to cf_mode without masking to 07777. Apply the correct masking, same as in the read path.
Announced Source revision 1
Original source ↗CVE-2026-64379
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-2026-64379
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": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
"lessThan": "5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14",
"versionType": "git"
},
{
"status": "affected",
"version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
"lessThan": "ee2216dbdf0c677e89bb43e03247dba590ed00ef",
"versionType": "git"
},
{
"status": "affected",
"version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
"lessThan": "f511807feee7cb29b61bdfa86472c7e9e2e5df94",
"versionType": "git"
},
{
"status": "affected",
"version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
"lessThan": "08c600b7e1818539ba5efee4cdb06215c245ca78",
"versionType": "git"
},
{
"status": "affected",
"version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
"lessThan": "b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d",
"versionType": "git"
},
{
"status": "affected",
"version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
"lessThan": "c6c484a7d5bff6b929a86d7ed5130f29834c6a0d",
"versionType": "git"
},
{
"status": "affected",
"version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
"lessThan": "f80add1bfb3425100a325b14f19648e75669a954",
"versionType": "git"
},
{
"status": "affected",
"version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
"lessThan": "e3d9c7160d483fc8f9e225aafad8ecbbc43f3151",
"versionType": "git"
}
],
"programFiles": [
"fs/smb/client/cifsacl.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.96",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.39",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.4",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/client/cifsacl.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-64379
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41022 · Revision 1
- Added to Heist Feed
- Publisher date