linux-kernel - [PATCH RFC 2/5] UBIFS: fix couple bugs in UBIFS extended attribute length calculation

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]

Date:	Wed, 13 Feb 2013 11:23:15 +0100
From:	Marc Kleine-Budde <mkl@...gutronix.de>
To:	linux-mtd@...ts.infradead.org
Cc:	kernel@...gutronix.de, artem.bityutskiy@...ux.intel.com,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	Subodh Nijsure <snijsure@...d-net.com>,
	Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH RFC 2/5] UBIFS: fix couple bugs in UBIFS extended attribute length calculation

From: Subodh Nijsure <snijsure@...d-net.com>

Signed-off-by: Subodh Nijsure <snijsure@...d-net.com>
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 fs/ubifs/journal.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index afaad07..6981d7d 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -572,7 +572,12 @@ int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
 
 	aligned_dlen = ALIGN(dlen, 8);
 	aligned_ilen = ALIGN(ilen, 8);
-	len = aligned_dlen + aligned_ilen + UBIFS_INO_NODE_SZ;
+	/*
+	 * Make sure to account for dir_ui+data_len in length
+	 * calculation in case there is extended attribute.
+	 */
+	len = aligned_dlen + aligned_ilen +
+	      UBIFS_INO_NODE_SZ + dir_ui->data_len;
 	dent = kmalloc(len, GFP_NOFS);
 	if (!dent)
 		return -ENOMEM;
@@ -649,7 +654,8 @@ int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
 
 	ino_key_init(c, &ino_key, dir->i_ino);
 	ino_offs += aligned_ilen;
-	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, UBIFS_INO_NODE_SZ);
+	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs,
+			    UBIFS_INO_NODE_SZ + dir_ui->data_len);
 	if (err)
 		goto out_ro;
 
-- 
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/