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TITLE:
Linux Kernel Xtensa "ptrace_setxregs()" Memory Disclosure Weakness

SECUNIA ADVISORY ID:
SA45267

VERIFY ADVISORY:
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http://secunia.com/advisories/45267/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45267

RELEASE DATE:
2011-07-28

DISCUSS ADVISORY:
http://secunia.com/advisories/45267/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/45267/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=45267

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DESCRIPTION:
A weakness has been reported in the Linux Kernel, which can be
exploited by malicious, local users to disclose potentially sensitive
information.

The weakness is caused due to the "ptrace_setxregs()" function in
arch/xtensa/kernel/ptrace.c not properly verifying the provided
pointers, which can be exploited to disclose kernel memory.

NOTE: This only affects the Xtensa architecture.

SOLUTION:
Fixed in the GIT repository.

PROVIDED AND/OR DISCOVERED BY:
Dan Rosenberg

ORIGINAL ADVISORY:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=0d0138ebe24b94065580bd2601f8bb7eb6152f56

OTHER REFERENCES:
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EXTENDED DESCRIPTION:
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EXTENDED SOLUTION:
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EXPLOIT:
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