PT-2026-34944 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-05-15 · CVE-2026-31592

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 KVM SEV component where the sev mem enc register region() function is not fully protected by the kvm->lock. Because the sev guest() function is unstable unless kvm->lock is held, a failure during KVM SEV INIT{2} can lead to an attempt to add data to an uninitialized sev->regions list. This can result in a general protection fault or a null-pointer dereference.

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

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-31592

OESA-2026-2311

OPENSUSE-SU-2026:10703-1

Affected Products

Linux Kernel

References · 108

• https://git.kernel.org/stable/c/0ff93ff0ba82e9511770e175fa50682a1ab14fb6 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31592 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31523 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31441 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10703-1 · Vendor Advisory
• https://git.kernel.org/stable/c/ab725ac3022469ecd4d7aa7d5646712e98b249d8 · Patch
• https://git.kernel.org/stable/c/b6408b6cec5df76a165575777800ef2aba12b109 · Patch
• https://cve.org/CVERecord?id=CVE-2026-31592 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-31592 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31674 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31667 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31504 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31630 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-31560 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-31592 · Vendor Advisory