PT-2026-43768 · Linux · Linux Kernel

CVE-2026-45901 · Published 2026-05-27 · Updated 2026-07-21

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 circular lock dependency exists within the netfilter nf tables component. This issue occurs when nft reset, ipset list, and iptables-nft with the -m set rule are executed simultaneously, creating a conflict between commit mutex, nfnl subsys ipset, and nlk cb mutex.

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

Exploit

Related Identifiers

CVE-2026-45901

OPENSUSE-SU-2026:21388-1

SUSE-SU-2026:22742-1

SUSE-SU-2026:22769-1

SUSE-SU-2026:22812-1

SUSE-SU-2026:22835-1

Affected Products

Linux Kernel

References · 565

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45901.json · Exploit
• https://osv.dev/vulnerability/openSUSE-SU-2026:21388-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45901 · Vendor Advisory
• https://git.kernel.org/stable/c/ee3978b6a0dcd4215cb7cedcba705a12174786a7 · Patch
• https://git.kernel.org/stable/c/7f261bb906bf527c4a6e2a646e2d5f3679f2a8bc · Patch
• https://osv.dev/vulnerability/SUSE-SU-2026:22835-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-45901 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:22812-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-45901 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-45901 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-45901 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2026-45901 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-45901 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:22742-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-45901 · Vendor Advisory