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linux-stable/fs/ext4
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Theodore Ts'o 5b9554dc5b ext4: validate s_reserved_gdt_blocks on mount 
If s_reserved_gdt_blocks is extremely large, it's possible for
ext4_init_block_bitmap(), which is called when ext4 sets up an
uninitialized block bitmap, to corrupt random kernel memory.  Add the
same checks which e2fsck has --- it must never be larger than
blocksize / sizeof(__u32) --- and then add a backup check in
ext4_init_block_bitmap() in case the superblock gets modified after
the file system is mounted.

Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
2016-07-05 20:01:52 -04:00
..
acl.c posix_acl: Inode acl caching fixes 2016-03-31 00:30:15 -04:00
acl.h
balloc.c ext4: validate s_reserved_gdt_blocks on mount 2016-07-05 20:01:52 -04:00
bitmap.c ext4: remove unused header files 2015-04-02 23:47:42 -04:00
block_validity.c ext4: call out CRC and corruption errors with specific error codes 2015-10-17 16:16:04 -04:00
crypto.c ext4/fscrypto: avoid RCU lookup in d_revalidate 2016-04-12 20:01:35 -07:00
crypto_fname.c ext4: Use skcipher 2016-01-27 20:35:55 +08:00
crypto_key.c ext4: Use skcipher 2016-01-27 20:35:55 +08:00
crypto_policy.c ext4 crypto: replace some BUG_ON()'s with error checks 2015-10-03 10:49:27 -04:00
dir.c Fix a number of bugs, most notably a potential stale data exposure 2016-05-24 12:55:26 -07:00
ext4.h ext4: optimize ext4_should_retry_alloc() to improve ENOSPC performance 2016-06-26 18:24:01 -04:00
ext4_crypto.h ext4: Use skcipher 2016-01-27 20:35:55 +08:00
ext4_extents.h ext4: fix misspellings in comments. 2016-03-09 23:49:05 -05:00
ext4_jbd2.c ext4: fix potential use after free in __ext4_journal_stop 2015-10-17 22:57:06 -04:00
ext4_jbd2.h ext4: optimize ext4_should_retry_alloc() to improve ENOSPC performance 2016-06-26 18:24:01 -04:00
extents.c ext4: check for extents that wrap around 2016-06-30 11:53:46 -04:00
extents_status.c ext4: remove trailing \n from ext4_warning/ext4_error calls 2016-04-27 01:11:21 -04:00
extents_status.h ext4: move procfs registration code to fs/ext4/sysfs.c 2015-09-23 12:46:17 -04:00
file.c DAX error handling for 4.7 2016-05-26 19:34:26 -07:00
fsync.c ext4: respect the nobarrier mount option in nojournal mode 2016-06-26 18:25:01 -04:00
hash.c ext4: remove unused header files 2015-04-02 23:47:42 -04:00
ialloc.c ext4: clean up error handling when orphan list is corrupted 2016-04-30 00:49:54 -04:00
indirect.c ext4: refactor direct IO code 2016-05-13 00:44:16 -04:00
inline.c ext4: remove trailing \n from ext4_warning/ext4_error calls 2016-04-27 01:11:21 -04:00
inode.c ext4: don't call ext4_should_journal_data() on the journal inode 2016-07-04 11:03:00 -04:00
ioctl.c Fix a number of bugs, most notably a potential stale data exposure 2016-05-24 12:55:26 -07:00
Kconfig ext4: Update EXT4_USE_FOR_EXT2 description 2015-09-24 13:27:47 +02:00
Makefile ext4: move sysfs code from super.c to fs/ext4/sysfs.c 2015-09-23 12:44:17 -04:00
mballoc.c ext4: optimize ext4_should_retry_alloc() to improve ENOSPC performance 2016-06-26 18:24:01 -04:00
mballoc.h ext4: fix compile error while opening the macro DOUBLE_CHECK 2016-03-13 17:18:12 -04:00
migrate.c ext4: fix misspellings in comments. 2016-03-09 23:49:05 -05:00
mmp.c ext4: remove trailing \n from ext4_warning/ext4_error calls 2016-04-27 01:11:21 -04:00
move_extent.c ext4: do not ask jbd2 to write data for delalloc buffers 2016-04-24 00:56:08 -04:00
namei.c ext4: correct error value of function verifying dx checksum 2016-07-03 21:11:08 -04:00
page-io.c ext4: remove unnecessary bio get/put 2016-05-05 22:09:49 -04:00
readpage.c ext4: remove unused page_idx 2016-07-05 16:32:32 -04:00
resize.c ext4: remove trailing \n from ext4_warning/ext4_error calls 2016-04-27 01:11:21 -04:00
super.c ext4: validate s_reserved_gdt_blocks on mount 2016-07-05 20:01:52 -04:00
symlink.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
sysfs.c ext4: add "static" to ext4_seq_##name##_fops struct 2015-11-26 15:52:24 -05:00
truncate.h ext4: fix races between page faults and hole punching 2015-12-07 14:28:03 -05:00
xattr.c ext4: avoid modifying checksum fields directly during checksum verification 2016-07-03 17:51:39 -04:00
xattr.h mbcache2: rename to mbcache 2016-02-22 22:35:22 -05:00
xattr_security.c switch xattr_handler->set() to passing dentry and inode separately 2016-05-27 15:39:43 -04:00
xattr_trusted.c switch xattr_handler->set() to passing dentry and inode separately 2016-05-27 15:39:43 -04:00
xattr_user.c switch xattr_handler->set() to passing dentry and inode separately 2016-05-27 15:39:43 -04:00