RedHat: RHSA-2018-2772:01 Important: kernel-alt security and bug fix update
Summary
The kernel-alt packages provide the Linux kernel version 4.x.
Security Fix(es):
* kernel: Infoleak/use-after-free in __oom_reap_task_mm function in
mm/oom_kill.c (CVE-2017-18202)
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.
Bug Fix(es):
* Previously, on certain little-endian variants of IBM Power Systems, there
was no “sysfs spec_store_bypass” file. As a consequence, there was no way
to indicate the Speculative Store Bypass Disable (SSBD) mitigation status.
This update adds infrastructure code into the kernel to create the
/sys/devices/system/cpu/vulnerabilities/* files. As a result, sysfs
spec_store_bypass shows whether the SSBD mitigation is disabled or enabled.
(BZ#1602340)
* Previously, the kernel architectures for IBM z Systems were missing
support to display the status of the Spectre v2 mitigations. As a
consequence, the /sys/devices/system/cpu/vulnerabilities/spectre_v2 file
did not exist. With this update, the kernel now shows the status in the
above mentioned file and as a result, the file now reports either
"Vulnerable" or "Mitigation: execute trampolines" message. (BZ#1619667)
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-2017-18202 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/cve/CVE-2017-18202
Package List
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source:
kernel-alt-4.14.0-49.13.1.el7a.src.rpm
aarch64:
kernel-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-debug-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-debug-debuginfo-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-debug-devel-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-devel-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-headers-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-tools-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-tools-libs-4.14.0-49.13.1.el7a.aarch64.rpm
perf-4.14.0-49.13.1.el7a.aarch64.rpm
perf-debuginfo-4.14.0-49.13.1.el7a.aarch64.rpm
python-perf-4.14.0-49.13.1.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-49.13.1.el7a.aarch64.rpm
noarch:
kernel-abi-whitelists-4.14.0-49.13.1.el7a.noarch.rpm
kernel-doc-4.14.0-49.13.1.el7a.noarch.rpm
ppc64le:
kernel-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-bootwrapper-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-debug-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-debug-debuginfo-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-devel-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-headers-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-tools-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-tools-libs-4.14.0-49.13.1.el7a.ppc64le.rpm
perf-4.14.0-49.13.1.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-49.13.1.el7a.ppc64le.rpm
python-perf-4.14.0-49.13.1.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-49.13.1.el7a.ppc64le.rpm
s390x:
kernel-4.14.0-49.13.1.el7a.s390x.rpm
kernel-debug-4.14.0-49.13.1.el7a.s390x.rpm
kernel-debug-debuginfo-4.14.0-49.13.1.el7a.s390x.rpm
kernel-debug-devel-4.14.0-49.13.1.el7a.s390x.rpm
kernel-debuginfo-4.14.0-49.13.1.el7a.s390x.rpm
kernel-debuginfo-common-s390x-4.14.0-49.13.1.el7a.s390x.rpm
kernel-devel-4.14.0-49.13.1.el7a.s390x.rpm
kernel-headers-4.14.0-49.13.1.el7a.s390x.rpm
kernel-kdump-4.14.0-49.13.1.el7a.s390x.rpm
kernel-kdump-debuginfo-4.14.0-49.13.1.el7a.s390x.rpm
kernel-kdump-devel-4.14.0-49.13.1.el7a.s390x.rpm
perf-4.14.0-49.13.1.el7a.s390x.rpm
perf-debuginfo-4.14.0-49.13.1.el7a.s390x.rpm
python-perf-4.14.0-49.13.1.el7a.s390x.rpm
python-perf-debuginfo-4.14.0-49.13.1.el7a.s390x.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):
aarch64:
kernel-debug-debuginfo-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-49.13.1.el7a.aarch64.rpm
kernel-tools-libs-devel-4.14.0-49.13.1.el7a.aarch64.rpm
perf-debuginfo-4.14.0-49.13.1.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-49.13.1.el7a.aarch64.rpm
noarch:
kernel-doc-4.14.0-49.13.1.el7a.noarch.rpm
ppc64le:
kernel-debug-debuginfo-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-debug-devel-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-49.13.1.el7a.ppc64le.rpm
kernel-tools-libs-devel-4.14.0-49.13.1.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-49.13.1.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-49.13.1.el7a.ppc64le.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-alt is now available for Red Hat Enterprise Linux 7.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 for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, noarch, ppc64le, s390x
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le
Bugs Fixed
1549621 - CVE-2017-18202 kernel: Infoleak/use-after-free in __oom_reap_task_mm function in mm/oom_kill.c