ntfs: add sanity check on allocation size
authorDongliang Mu <mudongliangabcd@gmail.com>
Tue, 22 Mar 2022 21:38:39 +0000 (14:38 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 8 Apr 2022 12:23:58 +0000 (14:23 +0200)
commit24ab2d4ef52c2dbb62a60844b87fc8872383407a
treeb8b63d51a453591240b4e680ef34efa4c7fe6ada
parent9dd6bb11df64a2b57f494b775f892569c817d318
ntfs: add sanity check on allocation size

[ Upstream commit 714fbf2647b1a33d914edd695d4da92029c7e7c0 ]

ntfs_read_inode_mount invokes ntfs_malloc_nofs with zero allocation
size.  It triggers one BUG in the __ntfs_malloc function.

Fix this by adding sanity check on ni->attr_list_size.

Link: https://lkml.kernel.org/r/20220120094914.47736-1-dzm91@hust.edu.cn
Reported-by: syzbot+3c765c5248797356edaa@syzkaller.appspotmail.com
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Acked-by: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
fs/ntfs/inode.c