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Rustam Kovhaev 16281bdd20 ntfs: add check for mft record size in superblock 
[ Upstream commit 4f8c94022f0bc3babd0a124c0a7dcdd7547bd94e ]

Number of bytes allocated for mft record should be equal to the mft record
size stored in ntfs superblock as reported by syzbot, userspace might
trigger out-of-bounds read by dereferencing ctx->attr in ntfs_attr_find()

Reported-by: syzbot+aed06913f36eff9b544e@syzkaller.appspotmail.com
Signed-off-by: Rustam Kovhaev <rkovhaev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: syzbot+aed06913f36eff9b544e@syzkaller.appspotmail.com
Acked-by: Anton Altaparmakov <anton@tuxera.com>
Link: https://syzkaller.appspot.com/bug?extid=aed06913f36eff9b544e
Link: https://lkml.kernel.org/r/20200824022804.226242-1-rkovhaev@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-29 09:58:03 +01:00
..
aops.c
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aops.h
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attrib.c
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attrib.h
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bitmap.c
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bitmap.h
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collate.c
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collate.h
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compress.c
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debug.c
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debug.h
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dir.c
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dir.h
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endian.h
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file.c
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index.c
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index.h
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2019-05-24 17:37:53 +02:00
inode.c
ntfs: add check for mft record size in superblock
2020-10-29 09:58:03 +01:00
inode.h
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2019-05-24 17:37:53 +02:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
layout.h
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lcnalloc.c
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lcnalloc.h
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logfile.c
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logfile.h
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Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
malloc.h
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2019-05-24 17:37:53 +02:00
mft.c
ntfs: remove (un)?likely() from IS_ERR() conditions
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mft.h
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2019-05-24 17:37:53 +02:00
mst.c
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namei.c
ntfs: remove (un)?likely() from IS_ERR() conditions
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ntfs.h
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quota.c
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quota.h
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runlist.c
ntfs: remove (un)?likely() from IS_ERR() conditions
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runlist.h
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super.c
ntfs: remove (un)?likely() from IS_ERR() conditions
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sysctl.c
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sysctl.h
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time.h
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types.h
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unistr.c
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upcase.c
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usnjrnl.c
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usnjrnl.h
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volume.h
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