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4ec1102813
linux/fs/ext4
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Theodore Ts'o 4ec1102813 ext4: Add sanity checks for the superblock before mounting the filesystem 
This avoids insane superblock configurations that could lead to kernel
oops due to null pointer derefences.

http://bugzilla.kernel.org/show_bug.cgi?id=12371

Thanks to David Maciejak at Fortinet's FortiGuard Global Security
Research Team who discovered this bug independently (but at
approximately the same time) as Thiemo Nagel, who submitted the patch.

Signed-off-by: Thiemo Nagel <thiemo.nagel@ph.tum.de>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
2009-01-06 14:53:26 -05:00
..
acl.c [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
acl.h ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00
balloc.c ext4: Use new buffer_head flag to check uninit group bitmaps initialization 2009-01-05 21:49:55 -05:00
bitmap.c ext4: Change unsigned long to unsigned int 2008-11-05 00:14:04 -05:00
dir.c ext4: Change unsigned long to unsigned int 2008-11-05 00:14:04 -05:00
ext4_extents.h ext4: Remove i_ext_generation from ext4_inode_info structure 2008-11-04 18:46:03 -05:00
ext4_i.h ext4: Make ext4_group_t be an unsigned int 2009-01-05 22:18:16 -05:00
ext4_jbd2.c ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
ext4_jbd2.h ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
ext4_sb.h ext4: add fsync batch tuning knobs 2009-01-03 20:27:38 -05:00
ext4.h ext4: Use new buffer_head flag to check uninit group bitmaps initialization 2009-01-05 21:49:55 -05:00
extents.c ext4: sparse fixes 2008-11-22 15:04:59 -05:00
file.c ext4: sparse fixes 2008-11-22 15:04:59 -05:00
fsync.c ext4: Add debugging markers that can be used by systemtap 2008-10-05 20:50:06 -04:00
group.h ext4: Rename read_block_bitmap() to ext4_read_block_bitmap() 2008-07-11 19:27:31 -04:00
hash.c ext4: Add support for non-native signed/unsigned htree hash algorithms 2008-10-28 13:21:44 -04:00
ialloc.c ext4: Use new buffer_head flag to check uninit group bitmaps initialization 2009-01-05 21:49:55 -05:00
inode.c ext4: Use high 16 bits of the block group descriptor's free counts fields 2009-01-05 22:20:24 -05:00
ioctl.c ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
Kconfig fs/Kconfig: move ext2, ext3, ext4, JBD, JBD2 out 2008-10-20 11:43:59 -07:00
Makefile ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00
mballoc.c ext4: Fix s_dirty_blocks_counter if block allocation failed with nodelalloc 2009-01-05 21:49:12 -05:00
mballoc.h ext4: Don't allow new groups to be added during block allocation 2009-01-05 21:46:55 -05:00
migrate.c ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
namei.c ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
namei.h
resize.c ext4: mark the blocks/inode bitmap beyond end of group as used 2009-01-05 21:46:04 -05:00
super.c ext4: Add sanity checks for the superblock before mounting the filesystem 2009-01-06 14:53:26 -05:00
symlink.c ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00
xattr_security.c ext4: move headers out of include/linux 2008-04-29 18:13:32 -04:00
xattr_trusted.c ext4: remove double definitions of xattr macros 2008-07-11 19:27:31 -04:00
xattr_user.c ext4: remove double definitions of xattr macros 2008-07-11 19:27:31 -04:00
xattr.c ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
xattr.h ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00