CVE-2024-1086: Critical Linux Kernel Flaw Allows Local Privilege Escalation to Root

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A high-severity security vulnerability, CVE-2024-1086, has been identified in the Linux kernel's mac80211 wireless networking subsystem. The flaw exploits a use-after-free memory error, allowing a local attacker with limited access to escalate privileges all the way to root, gaining full control of the affected system. Major distributions including Debian and Ubuntu have confirmed the impact and released patches — DSA-5604-1 and USN-6640-1 respectively. Users are strongly advised to update their kernels immediately, as the attack vector involves unsecured Wi-Fi connections, raising the risk in public network environments. As a temporary measure until patching is possible, administrators can consider restricting local user access, isolating Wi-Fi networks, or disabling the mac80211 module if it is not required.

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