high
7.8
CWE
264
Advisory Published
CVE Published
Updated

CVE-2016-4997

First published: Fri Jun 24 2016(Updated: )

A flaw was discovered in processing setsockopt for 32 bit processes on 64 bit systems. This flaw will allow attackers to alter arbitary kernel memory when unloading a kernel module. This action is usually restricted to root-priveledged users but can also be leveraged if the kernel is compiled with CONFIG_USER_NS and CONFIG_NET_NS and the user is granted elevated priveledges. This flaw was introduced in commit 52e804c6dfaa, Upstream fixes <a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce683e5f9d04">http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce683e5f9d04</a> <a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6e94e0cfb088">http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6e94e0cfb088</a> <a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bdf533de6968">http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bdf533de6968</a> Discussion on oss-sec: <a href="http://www.openwall.com/lists/oss-security/2016/06/24/5">http://www.openwall.com/lists/oss-security/2016/06/24/5</a>

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=2.6.17<3.2.80
Linux Linux kernel>=3.3<3.10.103
Linux Linux kernel>=3.11<3.12.62
Linux Linux kernel>=3.13<3.14.73
Linux Linux kernel>=3.15<3.16.37
Linux Linux kernel>=3.17<3.18.37
Linux Linux kernel>=3.19<4.1.28
Linux Linux kernel>=4.2<4.4.14
Linux Linux kernel>=4.5<4.6.3
Canonical Ubuntu Linux=12.04
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=15.10
Canonical Ubuntu Linux=16.04
Novell Suse Linux Enterprise Software Development Kit=12.0
Novell Suse Linux Enterprise Software Development Kit=12.0-sp1
Novell Suse Linux Enterprise Desktop=12.0
Novell Suse Linux Enterprise Desktop=12.0-sp1
Novell Suse Linux Enterprise Live Patching=12.0
Novell Suse Linux Enterprise Module For Public Cloud=12.0
Novell Suse Linux Enterprise Real Time Extension=12.0-sp1
Novell Suse Linux Enterprise Server=12.0
Novell Suse Linux Enterprise Server=12.0-sp1
Novell Suse Linux Enterprise Workstation Extension=12.0
Novell Suse Linux Enterprise Workstation Extension=12.0-sp1
Oracle Linux=7
Debian Debian Linux=8.0
debian/linux
5.10.223-1
6.1.106-3
6.1.99-1
6.10.9-1

Remedy

https://github.com/torvalds/linux/commit/ce683e5f9d045e5d67d1312a42b359cb2ab2a13c

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