RedHat: RHSA-2018-1350:01 Important: kernel security and bug fix update
Summary
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* hw: cpu: speculative execution permission faults handling (CVE-2017-5754)
* 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 Google Project Zero for reporting CVE-2017-5754
and Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting
CVE-2018-8897.
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#1554256)
Summary
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.
References
https://access.redhat.com/security/cve/CVE-2018-8897 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/pop_ss
Package List
Red Hat Enterprise Linux Server AUS (v. 6.5):
Source:
kernel-2.6.32-431.89.2.el6.src.rpm
noarch:
kernel-abi-whitelists-2.6.32-431.89.2.el6.noarch.rpm
kernel-doc-2.6.32-431.89.2.el6.noarch.rpm
kernel-firmware-2.6.32-431.89.2.el6.noarch.rpm
x86_64:
kernel-2.6.32-431.89.2.el6.x86_64.rpm
kernel-debug-2.6.32-431.89.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-431.89.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-431.89.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-431.89.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-431.89.2.el6.x86_64.rpm
kernel-devel-2.6.32-431.89.2.el6.x86_64.rpm
kernel-headers-2.6.32-431.89.2.el6.x86_64.rpm
perf-2.6.32-431.89.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-431.89.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-431.89.2.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.5):
Source:
kernel-2.6.32-431.89.2.el6.src.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-431.89.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-431.89.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-431.89.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-431.89.2.el6.x86_64.rpm
python-perf-2.6.32-431.89.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-431.89.2.el6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for kernel is now available for Red Hat Enterprise Linux 6.5Advanced Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Server AUS (v. 6.5) - noarch, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64
Bugs Fixed
1519781 - CVE-2017-5754 hw: cpu: speculative execution permission faults handling
1567074 - CVE-2018-8897 Kernel: error in exception handling leads to DoS