Integer overflow in Linux kernel - CVE-2026-90341
Published: September 18, 2026
Vulnerability identifier: #VU151146
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90341
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to access memory outside the platform resource.
The vulnerability exists due to integer overflow and insufficient bounds validation in coreboot_table_probe() when processing a malformed coreboot table. A local user can supply a malformed coreboot table to access memory outside the platform resource.
Affected software
Linux kernel
How to mitigate CVE-2026-90341
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/2d98a3b89394f283f054a4a54587c14ee89acaf9
- https://git.kernel.org/stable/c/3cca0d6dd4c2636d2514234233cb02db76621607
- https://git.kernel.org/stable/c/88027241c1d2c3213bac937a1c2cb89a5775a413
- https://git.kernel.org/stable/c/a58a57a1076f8c5dae0327e3710899478c3be901
- https://git.kernel.org/stable/c/d848fac90c6f0566e7b93066b0b86024f65f395e
- https://git.kernel.org/stable/c/e82f260a74dea8cdd7857f2cc66f73d0da522bb3
- https://git.kernel.org/stable/c/f79f621215a0944c4a0e1b3b86b99e433ae8c527
- https://git.kernel.org/stable/c/fd93859ecfa5b6495a6863c18fd923a7666def26