CVE-2026-89792
Published: September 18, 2026Last modified: October 6, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent out-of-bounds reads in share config responses Validate IPC share configuration payload sizes before consuming variable-length fields. Bound veto list parsing and account for the separator byte when deriving the path length.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.1 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.189-r0) |
| 25 LTS | linux-lts | Fixed (6.12.111-r0) | |
| Stream | linux-lts | Fixed (6.18.53-r0) |
References
- https://git.kernel.org/stable/c/0127f1c119bde40578f4d25f5d17333b4e75de8c
- https://git.kernel.org/stable/c/61a8d06600c8c397f9a7e01940479d4c94a82f5f
- https://git.kernel.org/stable/c/cd2bcee450bc94770be56c0b896c1a1dc6838bd8
- https://git.kernel.org/stable/c/df8aa4a09733c4d3974b1db32c1782b3aad3a151
- https://git.kernel.org/stable/c/f25e93768fcc5d8287e50b1ec52a42e4c276df34
- https://git.kernel.org/stable/c/fd636a87161def6e35876ab7943641ce457974c8
- https://git.kernel.org/stable/c/ffa507f5f774cb4d45136b106989ebc051361263