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fs/ntfs3: Fix oob in ntfs_listxattr 

[ Upstream commit 731ab1f9828800df871c5a7ab9ffe965317d3f15 ]

The length of name cannot exceed the space occupied by ea.

Reported-and-tested-by: syzbot+65e940cfb8f99a97aca7@syzkaller.appspotmail.com
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Edward Adam Davis 2023-12-30 17:00:03 +08:00 committed by Greg Kroah-Hartman
parent 5d67a4ff3d
commit 6ed6cdbe88
1 changed files with 3 additions and 0 deletions
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3
fs/ntfs3/xattr.c
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@ -217,6 +217,9 @@ static ssize_t ntfs_list_ea(struct ntfs_inode *ni, char *buffer,
if (!ea->name_len)
break;
if (ea->name_len > ea_size)
break;
if (buffer) {
/* Check if we can use field ea->name */
if (off + ea_size > size)