In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: fix performance regression in swap operation The patch "netfilter: ipset: fix race condition between swap/destroy and kernel side add/del/test", commit 28628fa9 fixes a race condition. But the synchronize_rcu() added to the swap function unnecessarily slows it down: it can safely be moved to destroy and use call_rcu() instead. Eric Dumazet pointed out that simply calling the destroy functions as rcu callback does not work: sets with timeout use garbage collectors which need cancelling at destroy which can wait. Therefore the destroy functions are split into two: cancelling garbage collectors safely at executing the command received by netlink and moving the remaining part only into the rcu callback.

ID	Name	Product	Family	Severity
197101	Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-6766-2)	Nessus	Ubuntu Local Security Checks	high
196947	Ubuntu 20.04 LTS : Linux kernel (BlueField) vulnerabilities (USN-6767-2)	Nessus	Ubuntu Local Security Checks	high
195662	RHEL 6 : kernel (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
195652	RHEL 7 : kernel (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
195135	Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-6767-1)	Nessus	Ubuntu Local Security Checks	high
195134	Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-6766-1)	Nessus	Ubuntu Local Security Checks	high
195025	Debian dsa-5681 : affs-modules-5.10.0-29-4kc-malta-di - security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2024-26910

medium

Tenable Plugins

high

high

critical

critical

high

high

high