linux-kernel - [PATCH 2/5] Squashfs: add missing check in zlib

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>] [day] [month] [year] [list]

Date:	Thu, 06 Jan 2011 21:21:03 +0000
From:	Phillip Lougher <phillip@...gher.demon.co.uk>
To:	linux Kernel Development <linux-kernel@...r.kernel.org>
CC:	linux-fsdevel@...r.kernel.org
Subject: [PATCH 2/5] Squashfs: add missing check in zlib_wrapper


On file system corruption zlib can return Z_STREAM_OK with
input buffers remaining, which will not be released.

Signed-off-by: Phillip Lougher <phillip@...gher.demon.co.uk>
---
  fs/squashfs/zlib_wrapper.c |    5 +++++
  1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/fs/squashfs/zlib_wrapper.c b/fs/squashfs/zlib_wrapper.c
index 1f4833b..ab5801f 100644
--- a/fs/squashfs/zlib_wrapper.c
+++ b/fs/squashfs/zlib_wrapper.c
@@ -127,6 +127,11 @@ static int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer,
  		goto release_mutex;
  	}

+	if (k < b) {
+		ERROR("zlib_uncompress error, data remaining\n");
+		goto release_mutex;
+	}
+
  	length = stream->total_out;
  	mutex_unlock(&msblk->read_data_mutex);
  	return length;
-- 
1.6.3.3

--
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/