From: Secunia Security Advisories (sec-advsecunia.com)
Date: Wed Feb 17 2010 - 13:17:11 CST

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http://secunia.com/blog/71/

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TITLE:
Linux Kernel USB Information Disclosure and Denial of Service

SECUNIA ADVISORY ID:
SA38601

VERIFY ADVISORY:
http://secunia.com/advisories/38601/

DESCRIPTION:
A weakness and a vulnerability have been reported in the Linux
Kernel, which can be exploited by malicious, local users to cause a
DoS (Denial of Service) and disclose potentially sensitive
information.

1) The vulnerability is caused due to the "processcompl()" and
"processcompl_compat()" functions in drivers/usb/core/devio.c
potentially returning kernel memory content to userspace processes,
which can be exploited to e.g. disclose potentially sensitive
information.

2) The weakness is caused due to a memory leak when handling certain
error cases in drivers/usb/core/devio.c, which can be exploited to
e.g. cause a DoS due to memory exhaustion.

Note: Successful exploitation requires access to USB userspace
devices.

SOLUTION:
Fixed in the GIT repository.

PROVIDED AND/OR DISCOVERED BY:
1) Marcus Meissner, SUSE
2) Reported by the vendor.

ORIGINAL ADVISORY:
1) http://www.openwall.com/lists/oss-security/2010/02/17/1
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d4a4683ca054ed9917dfc9e3ff0f7ecf74ad90d6
2) http://www.openwall.com/lists/oss-security/2010/02/17/2
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=ddeee0b2eec2a51b0712b04de4b39e7bec892a53

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