CVE-2025-22038
Published: April 18, 2025Last modified: April 18, 2025
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate zero num_subauth before sub_auth is accessed Access psid->sub_auth[psid->num_subauth - 1] without checking if num_subauth is non-zero leads to an out-of-bounds read. This patch adds a validation step to ensure num_subauth != 0 before sub_auth is accessed.
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 (6.1.134-r0) |
| Stream | linux-lts | Fixed (6.6.87-r0) |
References
- https://git.kernel.org/stable/c/0e36a3e080d6d8bd7a34e089345d043da4ac8283
- https://git.kernel.org/stable/c/3ac65de111c686c95316ade660f8ba7aea3cd3cc
- https://git.kernel.org/stable/c/56de7778a48560278c334077ace7b9ac4bfb2fd1
- https://git.kernel.org/stable/c/68c6c3142bfcdb049839d40a9a59ebe8ea865002
- https://git.kernel.org/stable/c/bf21e29d78cd2c2371023953d9c82dfef82ebb36
- https://git.kernel.org/stable/c/c8bfe1954a0b89e7b29b3a3e7f4c5e0ebd295e20