Improper input validation in Linux kernel - CVE-2026-80870
Published: September 5, 2026
Vulnerability identifier: #VU147053
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80870
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 KFD CRIU restore functions when processing user-supplied CRIU restore data. A local user can supply a restored event or buffer object ID larger than INT_MAX to cause a denial of service.
The denial of service requires panic_on_warn to be enabled.
Affected software
Linux kernel
How to mitigate CVE-2026-80870
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/085ea93bda71fee600cc12a17026598eb10dd1f9
- https://git.kernel.org/stable/c/543ed0f61d56501cc585162da600bbedd7c08c0f
- https://git.kernel.org/stable/c/85043dd49c2f51a37b22618168e3ae59ab92f0d6
- https://git.kernel.org/stable/c/89a75e3349c4fae28cbedc711bc924cbc6293da2
- https://git.kernel.org/stable/c/cb6311f25a096621ac7ffd91b50d1bb1cfb63a96
- https://git.kernel.org/stable/c/f8687018f24037056692c1e93c7d96cc72889d5b