CVE-2025-22038
ksmbd: validate zero num_subauth before sub_auth is accessed
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 16, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
0626e6641f6b467447c81dd7678a69c66f7746cf < 3ac65de111c686c95316ade660f8ba7aea3cd3cc 0626e6641f6b467447c81dd7678a69c66f7746cf < 0e36a3e080d6d8bd7a34e089345d043da4ac8283 0626e6641f6b467447c81dd7678a69c66f7746cf < 56de7778a48560278c334077ace7b9ac4bfb2fd1 0626e6641f6b467447c81dd7678a69c66f7746cf < 68c6c3142bfcdb049839d40a9a59ebe8ea865002 0626e6641f6b467447c81dd7678a69c66f7746cf < c8bfe1954a0b89e7b29b3a3e7f4c5e0ebd295e20 0626e6641f6b467447c81dd7678a69c66f7746cf < bf21e29d78cd2c2371023953d9c82dfef82ebb36
Linux / Linux
5.15
References
git.kernel.org: https://git.kernel.org/stable/c/3ac65de111c686c95316ade660f8ba7aea3cd3cc git.kernel.org: https://git.kernel.org/stable/c/0e36a3e080d6d8bd7a34e089345d043da4ac8283 git.kernel.org: https://git.kernel.org/stable/c/56de7778a48560278c334077ace7b9ac4bfb2fd1 git.kernel.org: https://git.kernel.org/stable/c/68c6c3142bfcdb049839d40a9a59ebe8ea865002 git.kernel.org: https://git.kernel.org/stable/c/c8bfe1954a0b89e7b29b3a3e7f4c5e0ebd295e20 git.kernel.org: https://git.kernel.org/stable/c/bf21e29d78cd2c2371023953d9c82dfef82ebb36 lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html