Linux kernel ELF core dump privilege elevation advisory and proof of concept exploit. Affects the 2.2 series up to and including 2.2.27-rc2 and 2.4 up to and including 2.4.31-pre1. Also affected is 2.6 up to and including 2.6.12-rc4.
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The Openwall Linux kernel patch is a collection of security hardening features for the Linux kernel which can stop most 'cookbook' buffer overflow exploits. The patch can also add more privacy to the system by restricting access to parts of /proc so that users may not see what others are doing. Also tightens down file descriptors 0, 1, and 2, implements process limits and shared memory destruction.
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