What is CVE-2026-31401?

CVE-2026-31401 is a high-severity vulnerability in Linux, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-04-03.

How severe is CVE-2026-31401?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Linux

CVE-2026-31401

In the Linux kernel, the following vulnerability has been resolved: HID: bpf: prevent buffer overflow in hid_hw_request right now the returned value is considered to be always valid. However, when playing with HID-BPF, the return value c…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (3.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 8bd0488b5ea58655ad6fdcbe0408ef49b16882b1, 6.11, 0
Linux Linux_kernel — versions 7.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-31401?: CVE-2026-31401 is a high-severity vulnerability in Linux, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-04-03.
How severe is CVE-2026-31401?: High severity. CVSS v3 base score is 7.8 out of 10.