Vulnerability in Linux

CVE-2026-31542

In the Linux kernel, the following vulnerability has been resolved: x86/platform/uv: Handle deconfigured sockets When a socket is deconfigured, it's mapped to SOCK_EMPTY (0xffff). This causes a panic while allocating UV hub info structures. Fix this by using NUMA_NO_NODE, allowing UV hub info structures to be allocated on valid nodes.

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.002 (4.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-31542: held from 0.001 to 0.002.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Affected products

  • Linux — versions 8a50c58519271dd24ba760bb282875f6ad66ee71, 6.5, 0
  • Linux Kernel — versions 7.0

References

Frequently asked questions

What is CVE-2026-31542?
CVE-2026-31542 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2026-04-24.
How severe is CVE-2026-31542?
Medium severity. CVSS v3 base score is 5.5 out of 10.