CVE-2026-68457
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)
ksmbd: use opener credentials for FSCTL mutations
In the Linux kernel, the following vulnerability has been resolved: ksmbd: use opener credentials for FSCTL mutations SET_SPARSE, SET_ZERO_DATA and SET_COMPRESSION operate on an open SMB handle but call VFS xattr, fallocate or fileattr helpers with the current ksmbd worker credentials. Those helpers can revalidate inode permissions, ownership and LSM policy independently of the SMB handle access mask. Run each operation with the credentials captured in the target file when the handle was opened. Keep credential handling local to these single-file FSCTLs rather than applying session credentials to the complete IOCTL handler, which also contains handle-less and multi-handle operations.
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) |
|---|---|---|---|---|---|
| e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 | affected | git | a8c18434e1f0d9f7989170bdb0490c0160baf065 | Unavailable | None listed |
| e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 | affected | git | 1e112c47ec5dd1942e2d4ca6e8e9b712238e20c2 | Unavailable | None listed |
| e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 | affected | git | fb1cae6302d58414ddf029e3f642711bd30243f7 | Unavailable | None listed |
| e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 | affected | git | e205f3e7e8c31a47cd11efb6cf663a527177e432 | Unavailable | None listed |
| e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 | affected | git | cfb2c6f71d61ed807c9d7a7af331d406f1f31877 | Unavailable | None listed |
| e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 | affected | git | c6394bcaf254c5baf9aff43376020be5db6d3316 | 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) |
|---|---|---|---|---|---|
| 5.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.15 | Unavailable | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.97 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |