RedHat: RHSA-2018-3656:01 Important: kernel-alt security and bug fix update
Summary
The kernel-alt packages provide the Linux kernel version 4.x.
Security Fix(es):
* kernel: Use-after-free in the vmacache_flush_all function resulting in a
possible privilege escalation (CVE-2018-17182)
* kernel: Privilege escalation on arm64 via KVM hypervisor (CVE-2018-18021)
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):
These updated kernel packages include also numerous bug fixes. Space
precludes documenting all of the bug fixes in this advisory. See the
descriptions in the related Knowledge Article:
https://access.redhat.com/articles/3714391
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-2018-17182 https://access.redhat.com/security/cve/CVE-2018-18021 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/3714391
Package List
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source:
kernel-alt-4.14.0-115.2.2.el7a.src.rpm
aarch64:
kernel-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debug-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debug-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debug-devel-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-devel-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-headers-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-tools-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-tools-libs-4.14.0-115.2.2.el7a.aarch64.rpm
perf-4.14.0-115.2.2.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
python-perf-4.14.0-115.2.2.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
noarch:
kernel-abi-whitelists-4.14.0-115.2.2.el7a.noarch.rpm
kernel-doc-4.14.0-115.2.2.el7a.noarch.rpm
ppc64le:
kernel-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-bootwrapper-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debug-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debug-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-devel-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-headers-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-tools-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-tools-libs-4.14.0-115.2.2.el7a.ppc64le.rpm
perf-4.14.0-115.2.2.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
python-perf-4.14.0-115.2.2.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
s390x:
kernel-4.14.0-115.2.2.el7a.s390x.rpm
kernel-debug-4.14.0-115.2.2.el7a.s390x.rpm
kernel-debug-debuginfo-4.14.0-115.2.2.el7a.s390x.rpm
kernel-debug-devel-4.14.0-115.2.2.el7a.s390x.rpm
kernel-debuginfo-4.14.0-115.2.2.el7a.s390x.rpm
kernel-debuginfo-common-s390x-4.14.0-115.2.2.el7a.s390x.rpm
kernel-devel-4.14.0-115.2.2.el7a.s390x.rpm
kernel-headers-4.14.0-115.2.2.el7a.s390x.rpm
kernel-kdump-4.14.0-115.2.2.el7a.s390x.rpm
kernel-kdump-debuginfo-4.14.0-115.2.2.el7a.s390x.rpm
kernel-kdump-devel-4.14.0-115.2.2.el7a.s390x.rpm
perf-4.14.0-115.2.2.el7a.s390x.rpm
perf-debuginfo-4.14.0-115.2.2.el7a.s390x.rpm
python-perf-4.14.0-115.2.2.el7a.s390x.rpm
python-perf-debuginfo-4.14.0-115.2.2.el7a.s390x.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):
aarch64:
kernel-debug-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
kernel-tools-libs-devel-4.14.0-115.2.2.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.2.2.el7a.aarch64.rpm
noarch:
kernel-doc-4.14.0-115.2.2.el7a.noarch.rpm
ppc64le:
kernel-debug-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debug-devel-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
kernel-tools-libs-devel-4.14.0-115.2.2.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.2.2.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.2.2.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
1631205 - CVE-2018-17182 kernel: Use-after-free in the vmacache_flush_all function resulting in a possible privilege escalation
1635475 - CVE-2018-18021 kernel: Privilege escalation on arm64 via KVM hypervisor