ntfs: add sanity check on allocation size
authorDongliang Mu <mudongliangabcd@gmail.com>
Tue, 22 Mar 2022 21:38:39 +0000 (14:38 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 22 Mar 2022 22:57:00 +0000 (15:57 -0700)
commit714fbf2647b1a33d914edd695d4da92029c7e7c0
treecc103b8f939c5560021748337656a9e76286f4f6
parent2b76e68d7249f2f209b3ee3d15e8a2fb805220a3
ntfs: add sanity check on allocation size

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>
fs/ntfs/inode.c