Out-of-bounds write in Linux kernel - CVE-2026-72025
Published: August 16, 2026
Vulnerability identifier: #VU143569
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72025
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause memory corruption.
The vulnerability exists due to an out-of-bounds write in the monwriter misc device when reusing data buffers with a different data length. A local user can submit crafted records with a changed data length to cause memory corruption.
By default, access to the device is restricted to root-only permissions.
Affected software
Linux kernel
How to mitigate CVE-2026-72025
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/01f3ce411711c2c919598ea25320a5a48f71edbc
- https://git.kernel.org/stable/c/036bc5661060702e798d215e81bb46da530965b3
- https://git.kernel.org/stable/c/096dff1247037d329c04b3a5be0ecdfb1c5c7ac6
- https://git.kernel.org/stable/c/2995ccec260caa9e85b3301a4aba1e66ed80ad74
- https://git.kernel.org/stable/c/759d91378203ea35fa9bca6726dcf0010de081fb
- https://git.kernel.org/stable/c/ae5347f3db1782c6118f6cc0d9fd8b1d43397db3
- https://git.kernel.org/stable/c/d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab
- https://git.kernel.org/stable/c/f0745496f7c171271cafd9457df3b914a483ddeb