CVE-2024-26974

In the Linux kernel, the following vulnerability has been resolved: crypto:
qat - resolve race condition during AER recovery During the PCI AER
system’s error recovery process, the kernel driver may encounter a race
condition with freeing the reset_data structure’s memory. If the device
restart will take more than 10 seconds the function scheduling that restart
will exit due to a timeout, and the reset_data structure will be freed.
However, this data structure is used for completion notification after the
restart is completed, which leads to a UAF bug. This results in a KFENCE
bug notice. BUG: KFENCE: use-after-free read in
adf_device_reset_worker+0x38/0xa0 [intel_qat] Use-after-free read at
0x00000000bc56fddf (in kfence-#142): adf_device_reset_worker+0x38/0xa0
[intel_qat] process_one_work+0x173/0x340 To resolve this race condition,
the memory associated to the container of the work_struct is freed on the
worker if the timeout expired, otherwise on the function that schedules the
worker. The timeout detection can be done by checking if the caller is
still waiting for completion or not by using completion_done() function.