CVE-2026-53112

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet<br /> <br /> The irq_prepare_bcn_tasklet is initialized in rtl_pci_init() and<br /> scheduled when RTL_IMR_BCNINT interrupt is triggered by hardware.<br /> But it is never killed in rtl_pci_deinit(). When the rtlwifi card<br /> probe fails or is being detached, the ieee80211_hw is deallocated.<br /> However, irq_prepare_bcn_tasklet may still be running or pending,<br /> leading to use-after-free when the freed ieee80211_hw is accessed<br /> in _rtl_pci_prepare_bcn_tasklet().<br /> <br /> Similar to irq_tasklet, add tasklet_kill() in rtl_pci_deinit() to<br /> ensure that irq_prepare_bcn_tasklet is properly terminated before<br /> the ieee80211_hw is released.<br /> <br /> The issue was identified through static analysis.