kernel: netfilter: nf_tables: fix underflow in chain reference counter

A flaw was found in the Linux kernel's netfilter nftables component. During set element addition, an error path incorrectly decrements the chain reference counter twice. This reference count underflow could potentially lead to a use-after-free condition when the chain is subsequently freed while...

OESA-2022-1881 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: A race condition in perfeventopen which can be exploited by an unprivileged user to gain root privileges. The bug allows to build several exploit primitives such as kernel address information leak, arbitrary execution,...