oss-security - CVE Request -- kernel: xfs: potential buffer overflow in xfs

Follow @Openwall on Twitter for new release announcements and other news

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

Message-ID: <20111026110536.GE28067@dhcp-25-225.brq.redhat.com>
Date: Wed, 26 Oct 2011 13:05:37 +0200
From: Petr Matousek <pmatouse@...hat.com>
To: oss-security@...ts.openwall.com
Subject: CVE Request -- kernel: xfs: potential buffer overflow in
 xfs_readlink()

A flaw was found in the way Linux kernel's XFS filesystem implementation
handled links with pathname larger than MAXPATHLEN. When
CONFIG_XFS_DEBUG configuration option was not enabled when compiling
Linux kernel, an attacker able to mount malicious XFS image could use
this flaw to crash the system, or potentially, elevate his privileges
on that system.

Proposed upstream patch:
http://oss.sgi.com/archives/xfs/2011-10/msg00345.html

References:
https://bugzilla.redhat.com/show_bug.cgi?id=749156
http://oss.sgi.com/archives/xfs/2011-10/msg00345.html

Thanks,
-- 
Petr Matousek / Red Hat Security Response Team

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.