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linux/fs/ext2
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Pan Bian ecebf55d27 ext2: fix potential use after free 
The function ext2_xattr_set calls brelse(bh) to drop the reference count
of bh. After that, bh may be freed. However, following brelse(bh),
it reads bh->b_data via macro HDR(bh). This may result in a
use-after-free bug. This patch moves brelse(bh) after reading field.

CC: stable@vger.kernel.org
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Jan Kara <jack@suse.cz>
2018-11-27 10:21:15 +01:00
..
acl.c ext2: cache NULL when both default_acl and acl are NULL 2018-09-03 11:05:03 +02:00
acl.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
balloc.c Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
dir.c iversion: Rename make inode_cmp_iversion{+raw} to inode_eq_iversion{+raw} 2018-02-01 08:15:25 -05:00
ext2.h ext2: remove redundant building macro check 2018-09-24 21:34:15 +02:00
file.c dax: remove VM_MIXEDMAP for fsdax and device dax 2018-08-17 16:20:27 -07:00
ialloc.c ext2: make sure that partially set up inodes won't be returned by ext2_iget() 2018-08-03 16:03:31 -04:00
inode.c ext2, dax: set ext2_dax_aops for dax files 2018-09-19 15:03:04 +02:00
ioctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at 2018-01-01 12:45:37 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namei.c ext2: make sure that partially set up inodes won't be returned by ext2_iget() 2018-08-03 16:03:31 -04:00
super.c ext2: initialize opts.s_mount_opt as zero before using it 2018-11-27 10:21:03 +01:00
symlink.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xattr.c ext2: fix potential use after free 2018-11-27 10:21:15 +01:00
xattr.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xattr_security.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xattr_trusted.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xattr_user.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00