oss-sec mailing list archives

Re: CVE REQUEST: linux kernel: process with pgid zero able to crash


From: <cve-assign () mitre org>
Date: Fri, 20 Jan 2017 22:22:43 -0500

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[] "A process that is in the same process group as the ``init'' process
(group id zero) can crash the Linux 2 kernel with several system calls
by passing in a process ID or process group ID of zero. The value zero
is a special value that indicates the current process ID or process
group. However, in this case it is also the process group ID of the
process."

The risk is that a non-root user can trigger a kernel crash on a
modified RHEL 6 system where the kernel runs a process that can be
exploited.

https://bugzilla.redhat.com/show_bug.cgi?id=1358840
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f106eee10038c2ee5b6056aaf3f6d5229be6dcdd
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f20011457f41c11edb5ea5038ad0c8ea9f392023
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fa2755e20ab0c7215d99c2dc7c262e98a09b01df

all of these showed up in the 2.6.35-rc1 release. Any distro
based on something older than that needs to worry here.

Use CVE-2010-5328.

- -- 
CVE Assignment Team
M/S M300, 202 Burlington Road, Bedford, MA 01730 USA
[ A PGP key is available for encrypted communications at
  http://cve.mitre.org/cve/request_id.html ]
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