RHSA-2016:0046: Important: kernel security update
The kernel packages contain the Linux kernel, the core of any Linuxoperating 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 ofan infinite loop in the microcode due to the way (sequential) delivering ofbenign exceptions such as #AC (alignment check exception) and #DB (debugexception) is handled. A privileged user inside a guest could use theseflaws 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 theCVE-2015-5307 issue.All kernel users are advised to upgrade to these updated packages, whichcontain backported patches to correct these issues. The system must berebooted for this update to take effect.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2016:0046?
The severity of RHSA-2016:0046 is classified as important.
How do I fix RHSA-2016:0046?
To fix RHSA-2016:0046, upgrade the kernel package to version 2.6.32-220.65.1.el6.
What systems are affected by RHSA-2016:0046?
RHSA-2016:0046 affects systems running the specified version of the Linux kernel on Red Hat Enterprise Linux 6.
What type of vulnerability is addressed in RHSA-2016:0046?
RHSA-2016:0046 addresses a denial of service vulnerability within the x86 ISA in a virtualized environment.
Is there a workaround for RHSA-2016:0046?
There is no specific workaround mentioned for RHSA-2016:0046; applying the update is recommended.