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Red Hat 7.4: RHSA-2018:1130-01 Important Updates for Kernel Vulnerabilities

red hat
Calendar Grey April 17, 2018
Scroller Redhat
Essential kernel update for Red Hat Enterprise Linux 7.4 to resolve significant security vulnerabilities and enhance overall system reliability.
An update for kernel is now available for Red Hat Enterprise Linux 7.4 Extended Update Support

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 packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824, Important)
* kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166, Important)
* kernel: Incorrect type conversion for size during dma allocation (CVE-2017-9725, Moderate)
* kernel: Use-after-free in snd_seq_ioctl_create_port() (CVE-2017-15265, Moderate)
* kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate)
* kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c (CVE-2017-18017, Moderate)
* kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ (CVE-2017-1000252, Moderate)
* kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate)
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 Mohamed Ghannam for reporting CVE-2017-8824; Jan H. Schönherr (Amazon) for reporting CVE-2017-1000252; and Armis Labs for reporting CVE-2017-1000410.
Bug Fix(es):
These updated kernel packages include also numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory. See the bug fix descriptions in the related Knowledge Article: https://access.redhat.com/articles/3411331

Topics%20covered

Topics Covered

security advisory security update Red Hat bug fix critical threat kernel system stability

References

https://access.redhat.com/security/cve/CVE-2017-8824 https://access.redhat.com/security/cve/CVE-2017-9725 https://access.redhat.com/security/cve/CVE-2017-13166 https://access.redhat.com/security/cve/CVE-2017-15265 https://access.redhat.com/security/cve/CVE-2017-17449 https://access.redhat.com/security/cve/CVE-2017-18017 https://access.redhat.com/security/cve/CVE-2017-1000252 https://access.redhat.com/security/cve/CVE-2017-1000410 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/3411331

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.4):
Source: kernel-3.10.0-693.25.2.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-693.25.2.el7.noarch.rpm kernel-doc-3.10.0-693.25.2.el7.noarch.rpm
x86_64: kernel-3.10.0-693.25.2.el7.x86_64.rpm kernel-debug-3.10.0-693.25.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.25.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.25.2.el7.x86_64.rpm kernel-devel-3.10.0-693.25.2.el7.x86_64.rpm kernel-headers-3.10.0-693.25.2.el7.x86_64.rpm kernel-tools-3.10.0-693.25.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.25.2.el7.x86_64.rpm perf-3.10.0-693.25.2.el7.x86_64.rpm perf-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm python-perf-3.10.0-693.25.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4):
x86_64: kernel-debug-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.25.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.25.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.25.2.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:1130-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1130
Issue date: 2018-04-17

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.4Extended 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.

Topics%20covered

Topics Covered

security advisory security update Red Hat bug fix critical threat kernel system stability

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.4) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.4) - noarch, ppc64, ppc64le, x86_64

Bugs Fixed

1489088 - CVE-2017-9725 kernel: Incorrect type conversion for size during dma allocation

1490781 - CVE-2017-1000252 kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ

1501878 - CVE-2017-15265 kernel: Use-after-free in snd_seq_ioctl_create_port()

1519160 - CVE-2017-1000410 kernel: Stack information leak in the EFS element

1519591 - CVE-2017-8824 kernel: Use-after-free vulnerability in DCCP socket

1525762 - CVE-2017-17449 kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity

1531135 - CVE-2017-18017 kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c

1548412 - CVE-2017-13166 kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation

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