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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>,
	Sasha Levin <sashal@kernel.org>,
	ntfs3@lists.linux.dev
Subject: [PATCH AUTOSEL 5.15 1/2] fs/ntfs3: Mark volume as dirty if xattr is broken
Date: Wed,  5 Jun 2024 07:56:38 -0400
Message-ID: <20240605115642.2965408-1-sashal@kernel.org>
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From: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

[ Upstream commit 24f6f5020b0b2c89c2cba5ec224547be95f753ee ]

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

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 d0b75d7f58a7b..4a7753384b0e9 100644
--- a/fs/ntfs3/xattr.c
+++ b/fs/ntfs3/xattr.c
@@ -217,8 +217,11 @@ 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 */
-- 
2.43.0