What is CVE-2026-31691?

CVE-2026-31691 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2026-04-27.

How severe is CVE-2026-31691?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Linux

CVE-2026-31691

In the Linux kernel, the following vulnerability has been resolved: igb: remove napi_synchronize() in igb_down() When an AF_XDP zero-copy application terminates abruptly (e.g., kill -9), the XSK buffer pool is destroyed but NAPI polling…

EPSS: 0.000 (3.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 2c6196013f84651772388a86dfd4bb033d0c0d45, 6.14, 0
Linux Linux_kernel — versions 7.0

References

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

Frequently asked questions

What is CVE-2026-31691?: CVE-2026-31691 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2026-04-27.
How severe is CVE-2026-31691?: Medium severity. CVSS v3 base score is 5.5 out of 10.