tree 327f073d461c2f1b4a9e667a82537ac8472f9949
parent a2a8cec68c69583b8de5409ade3cd641c7d4cef7
author Theodore Ts'o <tytso@mit.edu> 1573232290 -0500
committer Theodore Ts'o <tytso@mit.edu> 1573232568 -0500

libext2fs: verify the block numbers for the allocation bitmaps are valid

This avoids a potential UBsan failure when we multiply an insanely
high block number with the block size and we get a multiplication
overflow.

Google-Bug-Id: 128130353
Signed-off-by: Theodore Ts'o <tytso@mit.edu>