CVE-2026-43350
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
smb: client: require a full NFS mode SID before reading mode bits
In the Linux kernel, the following vulnerability has been resolved: smb: client: require a full NFS mode SID before reading mode bits parse_dacl() treats an ACE SID matching sid_unix_NFS_mode as an NFS mode SID and reads sid.sub_auth[2] to recover the mode bits. That assumes the ACE carries three subauthorities, but compare_sids() only compares min(a, b) subauthorities. A malicious server can return an ACE with num_subauth = 2 and sub_auth[] = {88, 3}, which still matches sid_unix_NFS_mode and then drives the sub_auth[2] read four bytes past the end of the ACE. Require num_subauth >= 3 before treating the ACE as an NFS mode SID. This keeps the fix local to the special-SID mode path without changing compare_sids() semantics for the rest of cifsacl.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| e2f8fbfb8d09c06decde162090fac3ee220aa280 | affected | git | 23b54d6cc3ef30a51d984dc74364f24039ae2ecb | Unavailable | None listed |
| e2f8fbfb8d09c06decde162090fac3ee220aa280 | affected | git | 1592a6cd6f653f2d24572a6976c7a775b19f4940 | Unavailable | None listed |
| e2f8fbfb8d09c06decde162090fac3ee220aa280 | affected | git | 8bd4cad3f458d11650d51c2d24b03fb1770ae6cc | Unavailable | None listed |
| e2f8fbfb8d09c06decde162090fac3ee220aa280 | affected | git | b53b8e98c23310294fc45fc686db5ee860311896 | Unavailable | None listed |
| e2f8fbfb8d09c06decde162090fac3ee220aa280 | affected | git | c8eef12af1cc73031639ea7cf16e0b10e2536b0b | Unavailable | None listed |
| e2f8fbfb8d09c06decde162090fac3ee220aa280 | affected | git | 38a69f08ee82c450d3e4168707fff2e317dc3ff7 | Unavailable | None listed |
| e2f8fbfb8d09c06decde162090fac3ee220aa280 | affected | git | f8488c07bea2431ee12a6067d736578064fa46b4 | Unavailable | None listed |
| e2f8fbfb8d09c06decde162090fac3ee220aa280 | affected | git | 2757ad3e4b6f9e0fed4c7739594e702abc5cab21 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.4 | Unavailable | None listed |
| 5.10.259 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.175 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.136 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.84 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.25 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.2 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |