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
- git.kernel.org/stable/c/513e06735f5be575b409d195822195348b164e48
- git.kernel.org/stable/c/275bdf762e82082f064e60a92448fa2ac43cf95b
- git.kernel.org/stable/c/a2b68a9a476b9544ff31f1fbcd5d80867a8a5e2f
- git.kernel.org/stable/c/b7b8012193fd98236d7ae05d4b553f010a77b2ef
- git.kernel.org/stable/c/2c91b39912278d0878f9ba60ba04d2518b18a08d
- git.kernel.org/stable/c/6fca757c20396dc2e604dcc61922264e9e3dc803
- git.kernel.org/stable/c/10d12b9240ebf96c785f0e2e4228318cd5f3a3eb
- git.kernel.org/stable/c/51f4e090b9f87b40c21b6daadb5c06e6c0a07b67
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.