Vulnerability in Linux

CVE-2026-31649

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix integer underflow in chain mode The jumbo_frm() chain-mode implementation unconditionally computes len = nopaged_len - bmax; where nopaged_len = s…

EPSS: 0.001 (22.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Linux — versions 286a837217204b1ef105e3a554d0757e4fdfaac1, 3.2, 0

References

Frequently asked questions

What is CVE-2026-31649?
CVE-2026-31649 is a critical-severity vulnerability in Linux. CVSS score: 9.8/10. Published 2026-04-24.
How severe is CVE-2026-31649?
Critical severity. CVSS v3 base score is 9.8 out of 10.