linux-kernel - [PATCH 9/9] fs/ntfs3: Mark volume as dirty if xattr is broken

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date: Tue, 23 Apr 2024 09:44:28 +0300
From: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
To: <ntfs3@...ts.linux.dev>
CC: <linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>,
	Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Subject: [PATCH 9/9] fs/ntfs3: Mark volume as dirty if xattr is broken

Mark a volume as corrupted if the name length exceeds the space
occupied by ea.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
---
 fs/ntfs3/xattr.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
index 53e7d1fa036a..73785dece7a7 100644
--- a/fs/ntfs3/xattr.c
+++ b/fs/ntfs3/xattr.c
@@ -219,8 +219,11 @@ static ssize_t ntfs_list_ea(struct ntfs_inode *ni, char *buffer,
 		if (!ea->name_len)
 			break;
 
-		if (ea->name_len > ea_size)
+		if (ea->name_len > ea_size) {
+			ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_ERROR);
+			err = -EINVAL; /* corrupted fs */
 			break;
+		}
 
 		if (buffer) {
 			/* Check if we can use field ea->name */
-- 
2.34.1