From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Dongliang Mu <mudongliangabcd@gmail.com>,
syzbot+3c765c5248797356edaa@syzkaller.appspotmail.com,
Anton Altaparmakov <anton@tuxera.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Sasha Levin <sashal@kernel.org>,
linux-ntfs-dev@lists.sourceforge.net
Subject: [PATCH AUTOSEL 5.15 16/16] ntfs: add sanity check on allocation size
Date: Mon, 28 Mar 2022 15:42:59 -0400 [thread overview]
Message-ID: <20220328194300.1586178-16-sashal@kernel.org> (raw)
In-Reply-To: <20220328194300.1586178-1-sashal@kernel.org>
From: Dongliang Mu <mudongliangabcd@gmail.com>
[ 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 | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index 4474adb393ca..517b71c73aa9 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -1881,6 +1881,10 @@ int ntfs_read_inode_mount(struct inode *vi)
}
/* Now allocate memory for the attribute list. */
ni->attr_list_size = (u32)ntfs_attr_size(a);
+ if (!ni->attr_list_size) {
+ ntfs_error(sb, "Attr_list_size is zero");
+ goto put_err_out;
+ }
ni->attr_list = ntfs_malloc_nofs(ni->attr_list_size);
if (!ni->attr_list) {
ntfs_error(sb, "Not enough memory to allocate buffer "
--
2.34.1
prev parent reply other threads:[~2022-03-28 19:48 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-28 19:42 [PATCH AUTOSEL 5.15 01/16] atomics: Fix atomic64_{read_acquire,set_release} fallbacks Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 02/16] locking/lockdep: Iterate lock_classes directly when reading lockdep files Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 03/16] ext4: correct cluster len and clusters changed accounting in ext4_mb_mark_bb Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 04/16] ext4: fix ext4_mb_mark_bb() with flex_bg with fast_commit Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 05/16] sched/tracing: Don't re-read p->state when emitting sched_switch event Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 06/16] sched/tracing: Report TASK_RTLOCK_WAIT tasks as TASK_UNINTERRUPTIBLE Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 07/16] ext4: don't BUG if someone dirty pages without asking ext4 first Sasha Levin
2022-03-28 19:43 ` syzbot
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 08/16] f2fs: fix to do sanity check on curseg->alloc_type Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 09/16] NFSD: Fix nfsd_breaker_owns_lease() return values Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 10/16] f2fs: don't get FREEZE lock in f2fs_evict_inode in frozen fs Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 11/16] btrfs: harden identification of a stale device Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 12/16] btrfs: make search_csum_tree return 0 if we get -EFBIG Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 13/16] f2fs: use spin_lock to avoid hang Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 14/16] f2fs: compress: fix to print raw data size in error path of lz4 decompression Sasha Levin
2022-03-28 19:42 ` [PATCH AUTOSEL 5.15 15/16] Adjust cifssb maximum read size Sasha Levin
2022-03-28 19:42 ` Sasha Levin [this message]
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