Issued:

2016-01-19

Updated:

2016-01-19

RHSA-2016:0045 - Important: kernel security update

Synopsis

Important: kernel security update

Type/Severity

Security Advisory Important

Topic

Updated kernel packages that fix two security issues are now available for Red Hat Enterprise Linux 5.

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.

Description

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

• Two flaws were found in the way the Linux kernel's networking implementation handled UDP packets with incorrect checksum values. A remote attacker could potentially use these flaws to trigger an infinite loop in the kernel, resulting in a denial of service on the system, or cause a denial of service in applications using the edge triggered epoll functionality. (CVE-2015-5364, CVE-2015-5366, Important)

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.

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

Updated Packages

• kernel-xen-debuginfo-2.6.18-408.el5.i686.rpm
• kernel-PAE-devel-2.6.18-408.el5.i686.rpm
• kernel-debug-debuginfo-2.6.18-408.el5.x86_64.rpm
• kernel-2.6.18-408.el5.i686.rpm
• kernel-debug-debuginfo-2.6.18-408.el5.ia64.rpm
• kernel-debug-2.6.18-408.el5.ia64.rpm
• kernel-devel-2.6.18-408.el5.ppc64.rpm
• kernel-debuginfo-2.6.18-408.el5.s390x.rpm
• kernel-xen-devel-2.6.18-408.el5.x86_64.rpm
• kernel-debug-2.6.18-408.el5.x86_64.rpm
• kernel-devel-2.6.18-408.el5.s390x.rpm
• kernel-xen-debuginfo-2.6.18-408.el5.ia64.rpm
• kernel-2.6.18-408.el5.ia64.rpm
• kernel-debug-2.6.18-408.el5.ppc64.rpm
• kernel-debug-devel-2.6.18-408.el5.ppc64.rpm
• kernel-xen-debuginfo-2.6.18-408.el5.x86_64.rpm
• kernel-debug-devel-2.6.18-408.el5.s390x.rpm
• kernel-headers-2.6.18-408.el5.ia64.rpm
• kernel-debuginfo-2.6.18-408.el5.ppc64.rpm
• kernel-xen-2.6.18-408.el5.x86_64.rpm
• kernel-headers-2.6.18-408.el5.i386.rpm
• kernel-headers-2.6.18-408.el5.x86_64.rpm
• kernel-debug-devel-2.6.18-408.el5.x86_64.rpm
• kernel-debuginfo-common-2.6.18-408.el5.ppc64.rpm
• kernel-2.6.18-408.el5.ppc64.rpm
• kernel-debuginfo-2.6.18-408.el5.i686.rpm
• kernel-debuginfo-common-2.6.18-408.el5.i686.rpm
• kernel-kdump-debuginfo-2.6.18-408.el5.s390x.rpm
• kernel-headers-2.6.18-408.el5.s390x.rpm
• kernel-xen-2.6.18-408.el5.ia64.rpm
• kernel-kdump-2.6.18-408.el5.ppc64.rpm
• kernel-devel-2.6.18-408.el5.i686.rpm
• kernel-headers-2.6.18-408.el5.ppc.rpm
• kernel-PAE-2.6.18-408.el5.i686.rpm
• kernel-xen-devel-2.6.18-408.el5.i686.rpm
• kernel-debug-2.6.18-408.el5.s390x.rpm
• kernel-devel-2.6.18-408.el5.ia64.rpm
• kernel-debuginfo-2.6.18-408.el5.x86_64.rpm
• kernel-debug-debuginfo-2.6.18-408.el5.i686.rpm
• kernel-debug-devel-2.6.18-408.el5.ia64.rpm
• kernel-debug-2.6.18-408.el5.i686.rpm
• kernel-devel-2.6.18-408.el5.x86_64.rpm
• kernel-debug-devel-2.6.18-408.el5.i686.rpm
• kernel-2.6.18-408.el5.s390x.rpm
• kernel-kdump-debuginfo-2.6.18-408.el5.ppc64.rpm
• kernel-2.6.18-408.el5.x86_64.rpm
• kernel-debug-debuginfo-2.6.18-408.el5.s390x.rpm
• kernel-debug-debuginfo-2.6.18-408.el5.ppc64.rpm
• kernel-headers-2.6.18-408.el5.ppc64.rpm
• kernel-kdump-devel-2.6.18-408.el5.s390x.rpm
• kernel-debuginfo-common-2.6.18-408.el5.ia64.rpm
• kernel-kdump-2.6.18-408.el5.s390x.rpm
• kernel-doc-2.6.18-408.el5.noarch.rpm
• kernel-xen-2.6.18-408.el5.i686.rpm
• kernel-PAE-debuginfo-2.6.18-408.el5.i686.rpm
• kernel-2.6.18-408.el5.src.rpm
• kernel-kdump-devel-2.6.18-408.el5.ppc64.rpm
• kernel-debuginfo-2.6.18-408.el5.ia64.rpm
• kernel-debuginfo-common-2.6.18-408.el5.s390x.rpm
• kernel-debuginfo-common-2.6.18-408.el5.x86_64.rpm
• kernel-xen-devel-2.6.18-408.el5.ia64.rpm

Fixes

• This content is not included.BZ - 1239029

CVEs

• CVE-2015-5364
• CVE-2015-5366

References

• https://access.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.