In the Linux kernel, the following vulnerability has been resolved:
btrfs: don't clobber ret in btrfsvalidatesuper()
Commit 2a9bb78cfd36 ("btrfs: validate system chunk array at btrfsvalidatesuper()") introduces a call to validatesyschunkarray() in btrfsvalidate_super(), which clobbers the value of ret set earlier. This has the effect of negating the validity checks done earlier, making it so btrfs could potentially try to mount invalid filesystems.