CVE-2026-45901: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: revert commit_mutex usage in reset path It causes circular lock dependency between commit_mutex, nfnl_subsys_ipset and nlk_cb_mutex when nft reset, ipset list, and iptables-nft with '-m set' rule run at the same time. Previous patches made it safe to run individual reset handlers concurrently so commit_mutex is no longer required to prevent this.

Affected products

• Linux Linux Kernel: from 6.1.107, before 6.2 (fixed in 6.2); from 6.6.48, before 6.19.4 (fixed in 6.19.4)

Published 2026-05-27. Last modified 2026-08-03.