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.

Classification

CVE ID: CVE-2025-22038

Affected Products

Vendor: Linux

Product: Linux, Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 5.04% (scored less or equal to compared to others)

EPSS Date: 2025-04-20 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-22038
https://git.kernel.org/stable/c/3ac65de111c686c95316ade660f8ba7aea3cd3cc
https://git.kernel.org/stable/c/0e36a3e080d6d8bd7a34e089345d043da4ac8283
https://git.kernel.org/stable/c/56de7778a48560278c334077ace7b9ac4bfb2fd1
https://git.kernel.org/stable/c/68c6c3142bfcdb049839d40a9a59ebe8ea865002
https://git.kernel.org/stable/c/c8bfe1954a0b89e7b29b3a3e7f4c5e0ebd295e20
https://git.kernel.org/stable/c/bf21e29d78cd2c2371023953d9c82dfef82ebb36

Timeline