Issued:

2014-12-18

Updated:

2014-12-18

RHSA-2014:2010 - Important: kernel security update

Synopsis

Important: kernel security update

Type/Severity

Security Advisory Important

Topic

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Description

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

• A flaw was found in the way the Linux kernel handled GS segment register base switching when recovering from a #SS (stack segment) fault on an erroneous return to user space. A local, unprivileged user could use this flaw to escalate their privileges on the system. (CVE-2014-9322, Important)

Red Hat would like to thank Andy Lutomirski for reporting this issue.

All kernel users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. 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.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/articles/11258

To install kernel packages manually, use "rpm -ivh [package]". Do not use "rpm -Uvh" as that will remove the running kernel binaries from your system. You may use "rpm -e" to remove old kernels after determining that the new kernel functions properly on your system.

Affected Products

Updated Packages

• kernel-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-debug-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-devel-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-3.10.0-123.13.2.el7.ppc64.rpm
• perf-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
• kernel-doc-3.10.0-123.13.2.el7.noarch.rpm
• perf-3.10.0-123.13.2.el7.x86_64.rpm
• perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
• python-perf-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
• kernel-tools-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-debug-devel-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-tools-libs-devel-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-kdump-devel-3.10.0-123.13.2.el7.s390x.rpm
• kernel-headers-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-tools-libs-devel-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-debuginfo-common-s390x-3.10.0-123.13.2.el7.s390x.rpm
• kernel-debug-devel-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-tools-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
• kernel-debug-devel-3.10.0-123.13.2.el7.s390x.rpm
• python-perf-3.10.0-123.13.2.el7.ppc64.rpm
• python-perf-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-abi-whitelists-3.10.0-123.13.2.el7.noarch.rpm
• perf-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-debug-3.10.0-123.13.2.el7.s390x.rpm
• kernel-devel-3.10.0-123.13.2.el7.s390x.rpm
• python-perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
• python-perf-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-tools-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-debug-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-tools-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-debuginfo-common-ppc64-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-devel-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-tools-libs-3.10.0-123.13.2.el7.x86_64.rpm
• perf-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-debug-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
• kernel-headers-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-debug-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-bootwrapper-3.10.0-123.13.2.el7.ppc64.rpm
• python-perf-3.10.0-123.13.2.el7.s390x.rpm
• kernel-headers-3.10.0-123.13.2.el7.s390x.rpm
• kernel-kdump-3.10.0-123.13.2.el7.s390x.rpm
• kernel-3.10.0-123.13.2.el7.s390x.rpm
• kernel-tools-libs-3.10.0-123.13.2.el7.ppc64.rpm
• kernel-debuginfo-common-x86_64-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
• kernel-3.10.0-123.13.2.el7.src.rpm
• perf-3.10.0-123.13.2.el7.s390x.rpm
• kernel-kdump-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
• kernel-debug-3.10.0-123.13.2.el7.ppc64.rpm

Fixes

• This content is not included.BZ - 1172806

CVEs

• CVE-2014-9322

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.