CVE-2025-21748
CRITICAL severity · CVSS 9.8 · Integer overflow
9.8CVSS CRITICAL
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/760568c1f62ea874e8fb492f9cfa4f47b4b8391e ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/760568c1f62ea874e8fb492f9cfa4f47b4b8391ePatch
- https://git.kernel.org/stable/c/82f59d64e6297f270311b16b5dcf65be406d1ea3Patch
- https://git.kernel.org/stable/c/aab98e2dbd648510f8f51b83fbf4721206ccae45Patch
- https://git.kernel.org/stable/c/b4b902737746c490258de5cb55cab39e79927a67Patch
- https://git.kernel.org/stable/c/ecb9947fa7c99a77b04d43404c6988a0d326e4a0Patch
- https://git.kernel.org/stable/c/f3b9fb2764591d792d160f375851013665a9e820
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html