A security issue has been reported in the Linux Kernel, which can be exploited by malicious, local users to disclose certain system information.
The security issue is caused due to the kernel not properly clearing certain 64bit registers before returning to a 32bit process, which can be exploited to disclose the value of the 64bit registers by temporarily switching a 32bit process into 64bit mode.
Successful exploitation requires an x86-64 system.
Solution: Update to version 126.96.36.199.
Provided and/or discovered by: Disclosed in a GIT commit.
Original Advisory: http://git.kernel.org/?p=linux/kernel/git/x86/linux-2.6-tip.git;a=commitdiff;h=24e35800cdc4350fc34e2bed37b608a9e13ab3b6
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Subject: Linux Kernel 64bit Kernel Register Value Leak
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