PT-2026-39012 · Linux · Linux Kernel

Published 2026-05-08 · Updated 2026-05-15 · CVE-2026-43351

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 In the KVM arm64 component, a failure in the vgic allocate private irqs locked() function during vgic creation can lead to dist->rd regions remaining uninitialized. Consequently, when kvm vgic dist destroy() is called, it attempts to free these uninitialized redistribution regions, leading to a system crash or unstable behavior.

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

Related Identifiers

CVE-2026-43351

Affected Products

Linux Kernel

References · 12

• https://nvd.nist.gov/vuln/detail/CVE-2026-43351 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43351 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43351 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43351 · Vendor Advisory
• https://git.kernel.org/stable/c/b7493f48c3dba75674a4ee505b4afa8fe5102457 · Patch
• https://cve.org/CVERecord?id=CVE-2026-43351 · Security Note
• https://git.kernel.org/stable/c/a24f1d80fbcdbf8b2a7044a00fa12b3972b4c31c · Patch
• https://git.kernel.org/stable/c/ac6769c8f948dff33265c50e524aebf9aa6f1be0 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-43351 · Vendor Advisory
• https://twitter.com/CVEnew/status/2052811020159131952 · Twitter Post
• https://git.kernel.org/linus/ac6769c8f948dff33265c50e524aebf9aa6f1be0 · Note
• https://twitter.com/hetmehtaa/status/2055151398283837677 · Twitter Post