kernel: ext4: kernel panic when writing data to the last block of sparse file

Multiple off-by-one errors in the ext4 subsystem in the Linux kernel before 3.0-rc5 allow local users to cause a denial of service BUGON and system crash by accessing a sparse file in extent format with a write operation involving a block number corresponding to the largest possible 32-bit unsign...

kernel: ext4: make_indexed_dir() missing validation

The makeindexeddir function in fs/ext4/namei.c in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 does not validate a certain reclen field, which allows local users to cause a denial of service OOPS by attempting to mount a crafted ext4 filesystem...

Linux kernel ext[234] directory corruption denial of service

The error-reporting functionality in 1 fs/ext2/dir.c, 2 fs/ext3/dir.c, and possibly 3 fs/ext4/dir.c in the Linux kernel 2.6.26.5 does not limit the number of printk console messages that report directory corruption, which allows physically proximate attackers to cause a denial of service temporar...

Linux kernel ext[234] directory corruption denial of service

The error-reporting functionality in 1 fs/ext2/dir.c, 2 fs/ext3/dir.c, and possibly 3 fs/ext4/dir.c in the Linux kernel 2.6.26.5 does not limit the number of printk console messages that report directory corruption, which allows physically proximate attackers to cause a denial of service temporar...

Linux kernel ext[234] directory corruption denial of service

The error-reporting functionality in 1 fs/ext2/dir.c, 2 fs/ext3/dir.c, and possibly 3 fs/ext4/dir.c in the Linux kernel 2.6.26.5 does not limit the number of printk console messages that report directory corruption, which allows physically proximate attackers to cause a denial of service temporar...