description: The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.
problem types: out-of-bounds read
affected:
{
product: Linux kernel through version 4.15
vendor: n/a
versions:
status: affected, version: Linux kernel through version 4.15
}