RHEL 6 : kernel (RHSA-2016:0046)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated kernel packages that fix two security issues are now available
for Red Hat Enterprise Linux 6.2 Advanced Update Support.

Red Hat Product Security has rated this update as having Important
security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

* It was found that the x86 ISA (Instruction Set Architecture) is
prone to a denial of service attack inside a virtualized environment
in the form of an infinite loop in the microcode due to the way
(sequential) delivering of benign exceptions such as #AC (alignment
check exception) and #DB (debug exception) is handled. A privileged
user inside a guest could use these flaws to create denial of service
conditions on the host kernel. (CVE-2015-5307, CVE-2015-8104,
Important)

Red Hat would like to thank Ben Serebrin of Google Inc. for reporting
the CVE-2015-5307 issue.

All kernel users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. The system
must be rebooted for this update to take effect.

See also :

https://www.redhat.com/security/data/cve/CVE-2015-5307.html
https://www.redhat.com/security/data/cve/CVE-2015-8104.html
http://rhn.redhat.com/errata/RHSA-2016-0046.html

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 4.7
(CVSS2#E:F/RL:U/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 87999 ()

Bugtraq ID:

CVE ID: CVE-2015-5307
CVE-2015-8104

Ready to Amp Up Your Nessus Experience?

Get Nessus Professional to scan unlimited IPs, run compliance checks & more

Buy Nessus Professional Now