CVE-2025-21748
Critical
ksmbd: fix integer overflows on 32 bit systems
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix integer overflows on 32 bit systems On 32bit systems the addition operations in ipc_msg_alloc() can potentially overflow leading to memory corruption. Add bounds checking using KSMBD_IPC_MAX_PAYLOAD to avoid overflow.
Exploit probability
0.6%
Published
February 27, 2025
Required by
Not available
Last source change
August 12, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2025-21748
View original source
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix integer overflows on 32 bit systems On 32bit systems the addition operations in ipc_msg_alloc() can potentially overflow leading to memory corruption. Add bounds checking using KSMBD_IPC_MAX_PAYLOAD to avoid overflow.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/760568c1f62ea874e8fb492f9cfa4f47b4b8391e
- https://git.kernel.org/stable/c/82f59d64e6297f270311b16b5dcf65be406d1ea3
- https://git.kernel.org/stable/c/aab98e2dbd648510f8f51b83fbf4721206ccae45
- https://git.kernel.org/stable/c/b4b902737746c490258de5cb55cab39e79927a67
- https://git.kernel.org/stable/c/ecb9947fa7c99a77b04d43404c6988a0d326e4a0
- https://git.kernel.org/stable/c/f3b9fb2764591d792d160f375851013665a9e820
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21748.json
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-21748