In the Linux kernel, the following vulnerability has been resolved:

crypto: iaa - Fix potential use after free bug

The free_device_compression_mode(iaa_device, device_mode) function frees
"device_mode" but it iss passed to iaa_compression_modes[i]->free() a few
lines later resulting in a use after free.

The good news is that, so far as I can tell, nothing implements the
->free() function and the use after free happens in dead code.  But, with
this fix, when something does implement it, we'll be ready.  :)

kernel.org https://git.kernel.org/stable/c/b5d534b473e2c8d3e4560be2dd6c12a8eb9d61e9 [No types assigned]

kernel.org https://git.kernel.org/stable/c/c66f0be993ba52410edab06124c54ecf143b05c1 [No types assigned]

kernel.org https://git.kernel.org/stable/c/e0d3b845a1b10b7b5abdad7ecc69d45b2aab3209 [No types assigned]