CVE-2026-53097

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work()<br /> <br /> When the mt7996 pci chip is detaching, the mt7996_crash_data is<br /> released in mt7996_coredump_unregister(). However, the work item<br /> dump_work may still be running or pending, leading to UAF bugs<br /> when the already freed crash_data is dereferenced again in<br /> mt7996_mac_dump_work().<br /> <br /> The race condition can occur as follows:<br /> <br /> CPU 0 (removal path) | CPU 1 (workqueue)<br /> mt7996_pci_remove() | mt7996_sys_recovery_set()<br /> mt7996_unregister_device() | mt7996_reset()<br /> mt7996_coredump_unregister() | queue_work()<br /> vfree(dev-&gt;coredump.crash_data) | mt7996_mac_dump_work()<br /> | crash_data-&gt; // UAF<br /> <br /> Fix this by ensuring dump_work is properly canceled before<br /> the crash_data is deallocated. Add cancel_work_sync() in<br /> mt7996_unregister_device() to synchronize with any pending<br /> or executing dump work.