CVE 2009-0748

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel 2.6.27 before and 2.6.28 before does not validate the superblock configuration, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) by attempting to mount a crafted ext4 filesystem.

See the CVE page on for more details.