In the Linux kernel, the following vulnerability has been resolved:
of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails
The global pointer 'reserved_mem' continues to reference the
reserved_mem_array which lives in __initdata if
alloc_reserved_mem_array() fails. of_reserved_mem_lookup() is
exported for post-init use, that would dereference freed memory
and trigger a use-after-free.
So reset reserved_mem_count to 0 when alloc_reserved_mem_array()
fails.
References 4
https://git.kernel.org/stable/c/6d28e6ad3c5c9248577f21057baa9bf16fa9ef3b
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9af58d10d0d8c08b822de5fc99e61f31a87ede8d
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/cbd3102fe27bc87da244bf4c3ba670ea4698b0a8
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e1686ca81dbf3edbde589b7daf312b45cbf76e03
416baaa9-dc9f-4396-8d5f-8c081fb06d67