Improper input validation in Linux kernel - CVE-2026-68254
Published: August 12, 2026
Vulnerability identifier: #VU142064
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-68254
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper input validation in the intel_vrr.c VRR capability handling when processing EDID monitor range data. A local user can provide crafted min/max vertical frequency values to trigger a division by zero and cause a denial of service.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-68254
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.105-1
linux (Debian package) - update to 6.12.105-1
External References
- https://git.kernel.org/stable/c/6598ac1721c3a5543efdbcab579a8561268d7ce1
- https://git.kernel.org/stable/c/c726c8bbee5115dad37fa7867136ebaa50690331
- https://git.kernel.org/stable/c/df1582c0a101e2e2f133dd331d2a3258bb6a7518
- https://git.kernel.org/stable/c/f16218689b41efcbc491207cd7716477b1223879
- https://git.kernel.org/stable/c/f8a9262c7a6fc2de9802e14b0228114f0333869e