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 Kernel>=2.6.17<3.2.80
Linux Kernel>=3.3<3.10.103
Linux Kernel>=3.11<3.12.62
Linux Kernel>=3.13<3.14.73
Linux Kernel>=3.15<3.16.37
Linux Kernel>=3.17<3.18.37
Linux Kernel>=3.19<4.1.28
Linux Kernel>=4.2<4.4.14
Linux Kernel>=4.5<4.6.3
Ubuntu Linux=12.04
Ubuntu Linux=14.04
Ubuntu Linux=15.10
Ubuntu Linux=16.04
SUSE Linux Enterprise Software Development Kit=12.0
SUSE Linux Enterprise Software Development Kit=12.0-sp1
SUSE Linux Enterprise Desktop=12.0
SUSE Linux Enterprise Desktop=12.0-sp1
SUSE Linux Enterprise Live Patching=12.0
SUSE Linux Enterprise Module for Public Cloud=12.0
SUSE Linux Enterprise Real Time Extension=12.0-sp1
SUSE Linux Enterprise Server=12.0
SUSE Linux Enterprise Server=12.0-sp1
SUSE Linux Enterprise Workstation Extension=12.0
SUSE Linux Enterprise Workstation Extension=12.0-sp1
Oracle Linux=7
Debian GNU/Linux=8.0
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.13-1

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2016-4997?

    CVE-2016-4997 is considered a high severity vulnerability that allows arbitrary kernel memory alteration.

  • How do I fix CVE-2016-4997?

    To address CVE-2016-4997, it is recommended to update to the patched Linux kernel versions such as 5.10.223-1 or later.

  • Which systems are affected by CVE-2016-4997?

    CVE-2016-4997 affects 32-bit Linux processes running on 64-bit systems across various Linux kernel versions.

  • What potential impact does CVE-2016-4997 have on systems?

    Exploitation of CVE-2016-4997 can lead to unauthorized access and alteration of kernel memory, compromising system integrity.

  • Is CVE-2016-4997 relevant for all Linux distributions?

    CVE-2016-4997 is relevant for several Linux distributions, including Debian, Ubuntu, and SUSE, depending on the kernel version.

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