linux-kernel - [PATCH 09/14] fs/ntfs3: Add rough attr alloc

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Message-ID: <20240822155207.600355-10-almaz.alexandrovich@paragon-software.com>
Date: Thu, 22 Aug 2024 18:52:02 +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>,
	<syzbot+c6d94bedd910a8216d25@...kaller.appspotmail.com>
Subject: [PATCH 09/14] fs/ntfs3: Add rough attr alloc_size check

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

diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c
index 6c76503edc20..82950a267d4c 100644
--- a/fs/ntfs3/record.c
+++ b/fs/ntfs3/record.c
@@ -334,6 +334,9 @@ 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;
-- 
2.34.1