From: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Date: Mon, 19 Aug 2024 13:26:59 +0000 (+0300)
Subject: fs/ntfs3: Add rough attr alloc_size check
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=c4a8ba334262e9a5c158d618a4820e1b9c12495c;p=users%2Fwilly%2Flinux.git

fs/ntfs3: Add rough attr alloc_size check

Reported-by: syzbot+c6d94bedd910a8216d25@syzkaller.appspotmail.com
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
---

diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c
index 2a375247b3c0..427c71be0f08 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;