Date: Tue, 21 Apr 2009 10:42:28 +0800 From: Eugene Teo <eugene@...hat.com> To: oss-security@...ts.openwall.com CC: "Steven M. Christey" <coley@...us.mitre.org> Subject: Re: CVE request: kernel: 'kill sig -1' must only apply to caller's PID namespace Eugene Teo wrote: > Eugene Teo wrote: >> I came across this while reviewing some older upstream patches. >> >> Apparently, it was possible to run kill <sig> -1 to kill processes in >> all PID namespaces, and break the isolation of namespaces. The expected >> behaviour for this is to only kill processes in its own hierarchy. The >> fix uses task_pid_vnr() to check if the process is outside of the >> caller's namespace before killing. > > I am still able to reproduce the problem even after applying this > upstream patch (commit d25141a8). I'm still figuring out what other Ok, you will need to make sure you have commit 44c4e1b2 too. I have tested this on 126.96.36.199 with these two patches, and the problem is fixed. https://bugzilla.redhat.com/show_bug.cgi?id=496031#c14 Thanks, Eugene -- Eugene Teo / Red Hat Security Response Team
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