CVE-2022-50567 fs: jfs: fix shift-out-of-bounds in dbAllocAG

In the Linux kernel, the following vulnerability has been resolved: fs: jfs: fix shift-out-of-bounds in dbAllocAG Syzbot found a crash : UBSAN: shift-out-of-bounds in dbAllocAG. The underlying bug is the missing check of bmp-dbagl2size. The field can be greater than 64 and trigger the...