kernel: use-after-free related to leaf anon_vma double reuse

A memory leak flaw with use-after-free capability was found in the Linux kernel. The VMA mm/rmap.c functionality in the ismergeableanonvma function continuously forks, using memory operations to trigger an incorrect reuse of leaf anonvma. This issue allows a local attacker to crash the system...

CVE-2022-42703

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anonvma double reuse...