What is CVE-2026-31663?

CVE-2026-31663 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-04-24.

How severe is CVE-2026-31663?

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

Vulnerability in Linux

CVE-2026-31663

In the Linux kernel, the following vulnerability has been resolved: xfrm: hold dev ref until after transport_finish NF_HOOK After async crypto completes, xfrm_input_resume() calls dev_put() immediately on re-entry before the skb reaches…

EPSS: 0.000 (3.3th 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 3.16.55, e095ecaec6d94aa2156cceb98a85d409b51190f3, 7.0

References

git.kernel.org/stable/c/0f451b43c88bf2b9c038b414be580efee42e031b
git.kernel.org/stable/c/5002beda5cac69d522dc54da0d5d463ed9c963d2
git.kernel.org/stable/c/1c428b03840094410c5fb6a5db30640486bbbfcb

Frequently asked questions

What is CVE-2026-31663?: CVE-2026-31663 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-04-24.
How severe is CVE-2026-31663?: High severity. CVSS v3 base score is 7.8 out of 10.