PT-2026-34931 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-05-06 · CVE-2026-31579

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 flaw in the WireGuard component occurs because the wg netns pre exit() function manually acquires rtnl lock() within the .pre exit callback. This can lead to a hung task if another thread already holds the rtnl mutex, causing the cleanup net workqueue or the setup net failure rollback path to block indefinitely while waiting for the lock.

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-2026-31579

OPENSUSE-SU-2026:10703-1

Affected Products

Linux Kernel

References · 75

• https://git.kernel.org/stable/c/60a25ef8dacb3566b1a8c4de00572a498e2a3bf9 · Patch
• https://cve.org/CVERecord?id=CVE-2026-31579 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31579 · Vendor Advisory
• https://git.kernel.org/stable/c/9a9e69155b2091b8297afaf1533b8d68a3096841 · Patch
• https://git.kernel.org/stable/c/a1d0f6cbb962af29586e3e65a4bced1a5e39221f · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31579 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31579 · Vendor Advisory
• https://git.kernel.org/stable/c/1c52ef00e391144334f10995985c2f256d4be982 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31579 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31579 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10703-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31579 · Security Note
• https://suse.com/security/cve/CVE-2026-31591 · Note
• https://suse.com/security/cve/CVE-2026-31577 · Note
• https://suse.com/security/cve/CVE-2026-31587 · Note