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Message-ID: <20110317084352.GA4206@vermeer.pre-sense.de> Date: Thu, 17 Mar 2011 09:43:52 +0100 From: Timo Warns <Warns@...-sense.de> To: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk Subject: [PRE-SA-2011-02] Information disclosure vulnerability in the OSF partition handling code of the Linux kernel PRE-CERT Security Advisory ========================== * Advisory: PRE-SA-2011-02 * Released on: 16 Mar 2011 * Last updated on: 16 Mar 2011 * Affected product: Linux Kernel 2.4 and 2.6 * Impact: disclosure of sensitive information * Origin: storage devices * Credit: Timo Warns (PRESENSE Technologies GmbH) * CVE Identifier: CVE-2011-1163 Summary ------- The Linux kernel contains a vulnerability that may lead to information leakage due to corrupted partition tables. The kernel automatically evaluates partition tables of storage devices. This happens independently of whether any auto-mounting is enabled or not. The code for evaluating OSF partition tables contains a buffer overflow bug that allows to leak data from the kernel heap to userspace. Workaround ---------- Compile and use a kernel that does not evaluate OSF partition tables. The corresponding configuration key is CONFIG_OSF_PARTITION. Solution -------- The bug has been fixed in Linux kernel 2.6.38. References ---------- When further information becomes available, this advisory will be updated. The most recent version of this advisory is available at: http://www.pre-cert.de/advisories/PRE-SA-2011-02.txt Contact ------- PRE-CERT can be reached under precert@...-secure.de. For PGP key information, refer to http://www.pre-cert.de/.
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