PT-2026-34894 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-04-29 · CVE-2026-31542

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the x86 platform UV component where deconfigured sockets are mapped to SOCK EMPTY (0xffff). This mapping leads to a system panic during the allocation of UV hub info structures.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-31542

Affected Products

Linux Kernel

References · 16

• https://git.kernel.org/stable/c/c51957601d32c0d195bce0b9345dfe93ef5728cc · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31542 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-31542 · Security Note
• https://ubuntu.com/security/CVE-2026-31542 · Vendor Advisory
• https://git.kernel.org/stable/c/9956d4892e78812246336c7ea51f5aa62018049e · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31542 · Vendor Advisory
• https://git.kernel.org/stable/c/1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31542 · Vendor Advisory
• https://git.kernel.org/stable/c/c1cf2218d2fa40a49921a7460981e5faab26f04e · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31542 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-31542 · Vendor Advisory
• https://git.kernel.org/stable/c/79f0faf81d3bbbe5f07bf6892450d3740a1b290d · Patch
• https://git.kernel.org/linus/1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3 · Note
• https://twitter.com/infoflowcloud/status/2047799407169491057 · Twitter Post
• https://twitter.com/CVEnew/status/2047798643051401223 · Twitter Post