CVE-2009-0031 kernel: local denial of service in keyctl_join_session_keyring

[Mark J Cox <mjc () redhat com>]

According to upstream commit 0d54ee1c7850a954026deec4cd4885f331da35cc 
"security: introduce missing kfree" there is a missing kfree in 
keyctl_join_session_keyring.

It looks like a local user could eventually cause a DoS by using up kernel 
memory, so I assigned this CVE-2009-0031.

http://git2.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0d54ee1c7850a954026deec4cd4885f331da35cc

Thanks, Mark
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Mark J Cox / Red Hat Security Response Team