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RedHat: RHSA-2019-2809-01 Important: Kernel-Alt Security Bug Fix

red hat
Calendar Grey September 20, 2019
Dist Redhat Esm H88
Important security notice for Red Hat Enterprise Linux 7 includes kernel-alt patches and essential improvements addressing side-channel flaws.
An update for kernel-alt is now available for Red Hat Enterprise Linux 7

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.

Summary

The kernel-alt packages provide the Linux kernel version 4.x.
Security Fix(es):
* Kernel: page cache side channel attacks (CVE-2019-5489)
* Kernel: KVM: potential use-after-free via kvm_ioctl_create_device() (CVE-2019-6974)
* kernel: broken permission and object lifetime handling for PTRACE_TRACEME (CVE-2019-13272)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* [kernel-alt]: BUG: unable to handle kernel NULL pointer IP: crypto_remove_spawns+0x118/0x2e0 (BZ#1536967)
* [HPE Apache] update ssif max_xmit_msg_size limit for multi-part messages (BZ#1610534)
* RHEL-Alt-7.6 - powerpc/pseries: Fix unitialized timer reset on migration / powerpc/pseries/mobility: Extend start/stop topology update scope (LPM) (BZ#1673613)
* RHEL-Alt-7.6 - s390: sha3_generic module fails and triggers panic when in FIPS mode (BZ#1673979)
* RHEL-Alt-7.6 - System crashed after oom - During ICP deployment (BZ#1710304)
* kernel-alt: Race condition in hashtables [rhel-alt-7.6.z] (BZ#1712127)
* RHEL-Alt-7.6 - OP930:PM_Test:cpupower -r command set values for first 3 cores in quad and misses last core. (CORAL) (BZ#1717836)
* RHEL-Alt-7.6 - disable runtime NUMA remapping for PRRN/LPM/VPHN (BZ#1717906)
* fragmented packets timing out (BZ#1729066)
* Backport TCP follow-up for small buffers (BZ#1733617)
Enhancement(s):
* RHEL-Alt-7.6 - perfevent PMDA cannot create file descriptors for reading nest events using the perf API (pcp/kernel) (CORAL) (BZ#1723036)

Topics%20covered

Topics Covered

security advisory red hat kernel update bug fix important kernel-alt side channel attack

References

https://access.redhat.com/security/cve/CVE-2019-5489 https://access.redhat.com/security/cve/CVE-2019-6974 https://access.redhat.com/security/cve/CVE-2019-13272 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source: kernel-alt-4.14.0-115.12.1.el7a.src.rpm
aarch64: kernel-4.14.0-115.12.1.el7a.aarch64.rpm kernel-debug-4.14.0-115.12.1.el7a.aarch64.rpm kernel-debug-debuginfo-4.14.0-115.12.1.el7a.aarch64.rpm kernel-debug-devel-4.14.0-115.12.1.el7a.aarch64.rpm kernel-debuginfo-4.14.0-115.12.1.el7a.aarch64.rpm kernel-debuginfo-common-aarch64-4.14.0-115.12.1.el7a.aarch64.rpm kernel-devel-4.14.0-115.12.1.el7a.aarch64.rpm kernel-headers-4.14.0-115.12.1.el7a.aarch64.rpm kernel-tools-4.14.0-115.12.1.el7a.aarch64.rpm kernel-tools-debuginfo-4.14.0-115.12.1.el7a.aarch64.rpm kernel-tools-libs-4.14.0-115.12.1.el7a.aarch64.rpm perf-4.14.0-115.12.1.el7a.aarch64.rpm perf-debuginfo-4.14.0-115.12.1.el7a.aarch64.rpm python-perf-4.14.0-115.12.1.el7a.aarch64.rpm python-perf-debuginfo-4.14.0-115.12.1.el7a.aarch64.rpm
noarch: kernel-abi-whitelists-4.14.0-115.12.1.el7a.noarch.rpm kernel-doc-4.14.0-115.12.1.el7a.noarch.rpm
ppc64le: kernel-4.14.0-115.12.1.el7a.ppc64le.rpm kernel-bootwrapper-4.14.0-115.12.1.el7a.ppc64le.rpm kernel-debug-4.14.0-115.12.1.el7a.ppc64le.rpm kernel-debug-debuginfo-4.14.0-115.12.1.el7a.ppc64le.rpm kernel-debuginfo-4.14.0-115.12.1.el7a.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:2809-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2809
Issue date: 2019-09-20

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.

Topics%20covered

Topics Covered

security advisory red hat kernel update bug fix important kernel-alt side channel attack

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

1664110 - CVE-2019-5489 Kernel: page cache side channel attacks

1671913 - CVE-2019-6974 Kernel: KVM: potential use-after-free via kvm_ioctl_create_device()

1730895 - CVE-2019-13272 kernel: broken permission and object lifetime handling for PTRACE_TRACEME

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