From effac690913af9a6c3d6cd967281a34e47ed3e4c Mon Sep 17 00:00:00 2001
From: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Date: Mon, 19 Aug 2024 16:26:59 +0300
Subject: [PATCH] fs/ntfs3: Add rough attr alloc_size check

commit c4a8ba334262e9a5c158d618a4820e1b9c12495c upstream.

Reported-by: syzbot+c6d94bedd910a8216d25@syzkaller.appspotmail.com
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Bin Lan <bin.lan.cn@windriver.com>
Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/ntfs3/record.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c
index b2b98631a000..bfb1f4c2f271 100644
--- a/fs/ntfs3/record.c
+++ b/fs/ntfs3/record.c
@@ -325,6 +325,9 @@ struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr)
 	} else {
 		if (attr->nres.c_unit)
 			return NULL;
+
+		if (alloc_size > mi->sbi->volume.size)
+			return NULL;
 	}
 
 	return attr;