CVE-2025-22039
ksmbd: fix overflow in dacloffset bounds check
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix overflow in dacloffset bounds check The dacloffset field was originally typed as int and used in an unchecked addition, which could overflow and bypass the existing bounds check in both smb_check_perm_dacl() and smb_inherit_dacl(). This could result in out-of-bounds memory access and a kernel crash when dereferencing the DACL pointer. This patch converts dacloffset to unsigned int and uses check_add_overflow() to validate access to the DACL.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 16, 2025 |
| Last Updated | May 11, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
0626e6641f6b467447c81dd7678a69c66f7746cf < 6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc 0626e6641f6b467447c81dd7678a69c66f7746cf < 6b8d379048b168a0dff5ab1acb975b933f368514 0626e6641f6b467447c81dd7678a69c66f7746cf < 443b373a4df5a2cb9f7b8c4658b2afedeb16397f 0626e6641f6b467447c81dd7678a69c66f7746cf < beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42
Linux / Linux
5.15
References
git.kernel.org: https://git.kernel.org/stable/c/6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc git.kernel.org: https://git.kernel.org/stable/c/6b8d379048b168a0dff5ab1acb975b933f368514 git.kernel.org: https://git.kernel.org/stable/c/443b373a4df5a2cb9f7b8c4658b2afedeb16397f git.kernel.org: https://git.kernel.org/stable/c/beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42