linux-kernel - [PATCH 2/2] hfsplus: abort hfsplus

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250806171132.3402278-3-frank.li@vivo.com>
Date: Wed,  6 Aug 2025 11:11:30 -0600
From: Yangtao Li <frank.li@...o.com>
To: slava@...eyko.com,
	glaubitz@...sik.fu-berlin.de,
	Yangtao Li <frank.li@...o.com>
Cc: linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] hfsplus: abort hfsplus_lookup if name is too long

Long file names for hfs is 255 characters.

Signed-off-by: Yangtao Li <frank.li@...o.com>
---
 fs/hfsplus/dir.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index 876bbb80fb4d..d8fb401e7fdc 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -38,6 +38,9 @@ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
 	u32 cnid, linkid = 0;
 	u16 type;
 
+	if (dentry->d_name.len > HFSPLUS_MAX_STRLEN)
+		return ERR_PTR(-ENAMETOOLONG);
+
 	sb = dir->i_sb;
 
 	dentry->d_fsdata = NULL;
-- 
2.48.1