CVE-2026-64380
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: harden POSIX SID length parsing
In the Linux kernel, the following vulnerability has been resolved: smb: client: harden POSIX SID length parsing posix_info_sid_size() reads sid[1] to obtain the subauthority count, but its existing boundary check still accepts buffers with only one remaining byte. Require two bytes before reading sid[1] so all client paths that reuse the helper reject truncated POSIX SIDs safely.
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) |
|---|---|---|---|---|---|
| 349e13ad30b45998bb9937cfe0b32be6f951976d | affected | git | 171605aed68380c2fa75dff9b3a1ed427c50065b | Unavailable | None listed |
| 349e13ad30b45998bb9937cfe0b32be6f951976d | affected | git | 4213c1208978483021d7d125c131de3985d38f61 | Unavailable | None listed |
| 349e13ad30b45998bb9937cfe0b32be6f951976d | affected | git | 96e889bc1e759c83f25093e8c2f3da31b4973f30 | Unavailable | None listed |
| 349e13ad30b45998bb9937cfe0b32be6f951976d | affected | git | 0de5b8e76847f5de26f364a82c6602c4881c30da | Unavailable | None listed |
| 349e13ad30b45998bb9937cfe0b32be6f951976d | affected | git | 427eb7eb46425fec845a43e861f3d6e2899cae59 | Unavailable | None listed |
| 349e13ad30b45998bb9937cfe0b32be6f951976d | affected | git | 86c5d470f5d42e61123b2f4b4f0b91f4eee5b980 | Unavailable | None listed |
| 349e13ad30b45998bb9937cfe0b32be6f951976d | affected | git | 46a84715a015cb48e1b9c219dc88c03d8a541ea4 | Unavailable | None listed |
| 349e13ad30b45998bb9937cfe0b32be6f951976d | affected | git | 7ad2bcf2441430bb2e918fb3ef9a90d775a6e422 | 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) |
|---|---|---|---|---|---|
| 5.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.7 | Unavailable | None listed |
| 5.10.261 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.96 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.39 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.4 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |