Synopsis

Moderate: kernel security and bug fix update

Type/Severity

Security Advisory: Moderate

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6.4 Advanced Update Support.

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

[Updated 10 May 2018]

The references to CVE-2017-5754 x86 (32-bit) mitigation were removed because Red Hat Enterprise Linux 6.4 Advanced Update Support does not include support for x86 32-bit architecture. Consequently, impact rating of this erratum was changed from Important to Moderate.

Description

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

Security Fix(es):

• Kernel: error in exception handling leads to DoS (CVE-2018-8897)
  

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting this issue.

Bug Fix(es):

• The kernel build requirements have been updated to the GNU Compiler Collection (GCC) compiler version that has the support for Retpolines. The Retpolines mechanism is a software construct that leverages specific knowledge of the underlying hardware to mitigate the branch target injection, also known as Spectre variant 2 vulnerability described in CVE-2017-5715. (BZ#1554251)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

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

The system must be rebooted for this update to take effect.

Affected Products

• Red Hat Enterprise Linux Server - AUS 6.4 x86_64

Fixes

• BZ - 1567074 - CVE-2018-8897 Kernel: error in exception handling leads to DoS

CVEs

• CVE-2018-8897

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/security/vulnerabilities/pop_ss

Red Hat Enterprise Linux Server - AUS 6.4

SRPM
kernel-2.6.32-358.88.2.el6.src.rpm	SHA-256: 3a73808fb8f4b11d28ef76cefa5c0862334a080255294d018859abbb4df8ff78
x86_64
kernel-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: c8cc5564245505830c355b56ab2531aa01f371d3c6a3c43620544c0e9a12026d
kernel-debug-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: a28b57ba31ab02344547d8d1fc8bf310d4de3ab3b7b072cf765a9e6678906e0d
kernel-debug-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: db38e89e08b9276f3fd4c08fb0e658468df450205cba7749cccc6a670b04ecf1
kernel-debug-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: db38e89e08b9276f3fd4c08fb0e658468df450205cba7749cccc6a670b04ecf1
kernel-debug-devel-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 6963a6b3199068d89f02175e186e1074165dace031614833498974d65d84e765
kernel-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 1cb4744fa4480600eac3f2393d62c57144876594b3af318a177dc90f0ebf7d52
kernel-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 1cb4744fa4480600eac3f2393d62c57144876594b3af318a177dc90f0ebf7d52
kernel-debuginfo-common-x86_64-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 242a7c1a2eeeee063771371a60bd0f3391e16b07c7cdfade1e7977008c06bf9e
kernel-debuginfo-common-x86_64-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 242a7c1a2eeeee063771371a60bd0f3391e16b07c7cdfade1e7977008c06bf9e
kernel-devel-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 4670544e5665eda925a2a87cbb13fd284f1dd2818fbd01be5376d81336943eca
kernel-doc-2.6.32-358.88.2.el6.noarch.rpm	SHA-256: 9731e057d36d37f119c5ef18edee88b322e465f6815acd1d3a074ad3fc0fcc88
kernel-firmware-2.6.32-358.88.2.el6.noarch.rpm	SHA-256: e8f1a407687e81f85096760791f2d0eff4ae89b6afe298e101ebe007b549b5cf
kernel-headers-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: e73d0b35ef4ea42d570f8fb632f6420b53e2cbb0ed746f22280df0df9b894aff
perf-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 1c18147e7dbd014981dc3ec50fa93da96cbd70b064a85200e131280f49bf1a87
perf-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 8e1ef19dcbb9095ddabfa09c17330de96b9bf8e4c7b7892527ad981dc4624330
perf-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 8e1ef19dcbb9095ddabfa09c17330de96b9bf8e4c7b7892527ad981dc4624330
python-perf-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 0d862f68a1e90bd96eae45690ec277a3ca1ea873ec643e1dc2427578eb8b67d3
python-perf-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 371949fa786b942fa38a3c22d46d6d8374d28f5ff4f3a207eaea221f912c2075
python-perf-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm	SHA-256: 371949fa786b942fa38a3c22d46d6d8374d28f5ff4f3a207eaea221f912c2075