linux-kernel - [PATCH AUTOSEL 6.6 05/17] fs/ntfs3: Add rough attr alloc

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Message-ID: <20241014035815.2247153-5-sashal@kernel.org>
Date: Sun, 13 Oct 2024 23:57:55 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>,
	syzbot+c6d94bedd910a8216d25@...kaller.appspotmail.com,
	Sasha Levin <sashal@...nel.org>,
	ntfs3@...ts.linux.dev
Subject: [PATCH AUTOSEL 6.6 05/17] fs/ntfs3: Add rough attr alloc_size check

From: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>

[ Upstream commit c4a8ba334262e9a5c158d618a4820e1b9c12495c ]

Reported-by: syzbot+c6d94bedd910a8216d25@...kaller.appspotmail.com
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/ntfs3/record.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c
index 2a375247b3c09..427c71be0f087 100644
--- a/fs/ntfs3/record.c
+++ b/fs/ntfs3/record.c
@@ -331,6 +331,9 @@ struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr)
 
 		if (attr->nres.c_unit)
 			return NULL;
+
+		if (alloc_size > mi->sbi->volume.size)
+			return NULL;
 	}
 
 	return attr;
-- 
2.43.0