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



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TITLE:
Linux Kernel 64bit Personality Handling Denial of Service

SECUNIA ADVISORY ID:
SA38354

VERIFY ADVISORY:
http://secunia.com/advisories/38354/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error when setting the
personality of a process, which can be exploited to cause a kernel
crash by e.g. executing a 64bit application with a missing ELF
interpreter out of a 32bit application and causing a segmentation
fault.

Successful exploitation requires a 64bit system and may also require
that core dumps are enabled.

SOLUTION:
Fixed in version 2.6.33-rc6.

PROVIDED AND/OR DISCOVERED BY:
Mathias Krause

ORIGINAL ADVISORY:
Mathias Krause:
http://marc.info/?l=linux-mm&m=126466407724382&w=4

GIT commits:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=221af7f87b97431e3ee21ce4b0e77d5411cf1549
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=05d43ed8a89c159ff641d472f970e3f1baa66318
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=94673e968cbcce07fa78dac4b0ae05d24b5816e1

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