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Date: Wed, 27 May 2020 09:44:50 +0200
From: Ondrej Mosnacek <>
Cc: Paul Moore <>, Stephen Smalley <>, 
	Jeff Vander Stoep <>, Wade Mealing <>
Subject: CVE-2020-10751 - Linux kernel: SELinux netlink permission check bypass

(Resending with correct ML address...)


This flaw has already been announced and described here:

This is just a note to let you know that it has been assigned a
CVE-2020-10751 upon request from Red Hat.

The flaw is fixed by the following upstream commit:

commit fb73974172ffaaf57a7c42f35424d9aece1a5af6
Author: Paul Moore <>
Date:   Tue Apr 28 09:59:02 2020 -0400

   selinux: properly handle multiple messages in selinux_netlink_send()

The flaw dates back at least to Linux-2.6.12-rc2, so likely all
versions of Linux currently in use are affected.

RH tracker:

Ondrej Mosnacek
Software Engineer, Platform Security - SELinux kernel,
Red Hat, Inc.

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