CVE-2025-38710 gfs2: Validate i_depth for exhash directories

In the Linux kernel, the following vulnerability has been resolved: gfs2: Validate idepth for exhash directories A fuzzer test introduced corruption that ends up with a depth of 0 in direread, causing an undefined shift by 32 at: index = hash 32 - dip-idepth; As calculated in an open-coded way in...