Linux Kernel CVE-2026-53112

Vendor-released patch: update to a fixed stable kernel - 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 7.0.10, 6.18.33 or mainline 7.1 - or the equivalent distribution package; Ubuntu users should apply the kernel updates in USN-8566-1, USN-8567-1 and USN-8568-1 (https://ubuntu.com/security/notices/USN-8568-1) and reboot. The upstream commits are published at git.kernel.org (e.g. https://git.kernel.org/stable/c/ae10d4a1ab6bcaa1336abb171908a9a365761d3e), and the one-line fix simply adds tasklet_kill() for irq_prepare_bcn_tasklet in rtl_pci_deinit(). Where immediate patching is not possible, the practical compensating control is to prevent the vulnerable driver from loading on systems that do not need Realtek PCIe Wi-Fi - blacklist the rtlwifi/rtl_pci modules (e.g. via modprobe blacklist) - which eliminates the code path entirely at the cost of disabling those wireless adapters; on systems that need Wi-Fi, restrict physical/local access and avoid repeated driver bind/unbind or hotplug operations since the UAF is tied to probe-failure and detach paths.