CVE-2026-45901
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk9th percentile - higher than 9% of all known CVEs
Summary
A vulnerability has been identified in the Linux kernel related to the use of commit_mutex in the reset path in netfilter. This issue leads to a 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 are run simultaneously.
Risk Assessment
This vulnerability may lead to system deadlock or unpredictable behavior when different operations are executed concurrently. It can affect the stability and security of the system.
Recommendation
It is recommended to update the Linux kernel to the latest version to eliminate this vulnerability. Additionally, monitor the use of netfilter-related tools to avoid concurrent operations.
Original NVD description (English source)
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.