PT-2026-34385 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-06-15 · CVE-2026-31480

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 A potential deadlock exists in the tracing component during CPU hotplug operations involving osnoise. The issue occurs when a specific sequence of events involving mutex lock(&interface lock) and cpus write lock() leads to a state where tasks are mutually waiting for locks, causing the system to hang.

Recommendations Swap the order of cpus read lock() and mutex lock(&interface lock) to resolve the deadlock.

Fix

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

CVE-2026-31480

ECHO-6672-49E0-CBF4

SUSE-SU-2026:22048-1

SUSE-SU-2026:22076-1

SUSE-SU-2026:22087-1

SUSE-SU-2026:22108-1

Affected Products

Linux Kernel

References · 260

• https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31480 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-31480 · Vendor Advisory
• https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31480 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:22048-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31480 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-31480 · Vendor Advisory
• https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31480 · Vendor Advisory
• https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831 · Patch
• https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2026:22076-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-31480 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31480 · Vendor Advisory