CVE-2025-22038
Medium
Elevated severity or exploit probability.
CVSS base
8.3
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
EPSS — probability of exploitation (30 days)
0.6%
46.3th percentile
CISA KEV
Not listed
Weakness / dates
CWE-125
Published 2025-04-16 · modified 2026-07-30
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | L | Low |
| Availability | H | High |
Timeline
- 2025-04-16 — Published (NVD)
- 2026-07-30 — Last modified (NVD)
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.
Affected
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
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html