What is CVE-2026-31417?

CVE-2026-31417 is a high-severity vulnerability in Linux, classified under Integer Underflow. CVSS score: 7.5/10. Published 2026-04-13.

How severe is CVE-2026-31417?

High severity. CVSS v3 base score is 7.5 out of 10.

Integer overflow in Linux

CVE-2026-31417

In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix overflow when accumulating packets Add a check to ensure that `x25_sock.fraglen` does not overflow. The `fraglen` also needs to be resetted when purging `f…

EPSS: 0.001 (22.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 2.6.12, 0
Linux Linux_kernel — versions 2.6.12, 7.0

Weakness classification (CWE)

CWE-191 — Integer Underflow

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)
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-2026-31417?: CVE-2026-31417 is a high-severity vulnerability in Linux, classified under Integer Underflow. CVSS score: 7.5/10. Published 2026-04-13.
How severe is CVE-2026-31417?: High severity. CVSS v3 base score is 7.5 out of 10.