Synopsis

Moderate: kernel-rt security and bug fix update

Type/Severity

Security Advisory: Moderate

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: stack-based buffer overflow in chap_server_compute_md5() in iscsi target (CVE-2018-14633)
  
• kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable() allows for denial of service (CVE-2018-14646)
  

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 Vincent Pelletier for reporting CVE-2018-14633 and Christian Brauner for reporting CVE-2018-14646.

Bug Fix(es):

• The kernel-rt packages have been upgraded to the 3.10.0-957.1.2 source tree, which provides a number of bug fixes over the previous version. (BZ#1632386)

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.

Affected Products

• Red Hat Enterprise Linux for Real Time 7 x86_64
• Red Hat Enterprise Linux for Real Time for NFV 7 x86_64

Fixes

• BZ - 1626035 - CVE-2018-14633 kernel: stack-based buffer overflow in chap_server_compute_md5() in iscsi target
• BZ - 1630124 - CVE-2018-14646 kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable() allows for denial of service
• BZ - 1632386 - kernel-rt: update to the RHEL7.6.z batch#1 source tree

CVEs

• CVE-2018-14633
• CVE-2018-14646

References

• https://access.redhat.com/security/updates/classification/#moderate

Red Hat Enterprise Linux for Real Time 7

SRPM
kernel-rt-3.10.0-957.1.3.rt56.913.el7.src.rpm	SHA-256: 5b0a4858a86a250bcf968aadcba99fed71d3d8395466a4869662835de346cd0a
x86_64
kernel-rt-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: b229bc341b9a9f0a25c431c9dd7bbe8960b8ac1682eb4acb228e4d4d314b9168
kernel-rt-debug-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: ee3d3c44649fd45625c4a806f31a8ff7144b1b96d3f1b9f66886fd65280d0f3d
kernel-rt-debug-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 47688149becec5314960687754ec2d45991f52116179759e3ffcd34b3d2d4fe9
kernel-rt-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 85b4c33df35d15f3ab4f1ae5cf9d902effa3791f92f3d470557c264fa4f5c2b7
kernel-rt-doc-3.10.0-957.1.3.rt56.913.el7.noarch.rpm	SHA-256: 2cd20a2cab769c5b66a4bfaa9f5b6e031cb68177d6d18c89e1ecc19057e2c463
kernel-rt-trace-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 0c9bb5317635044ce530d3d5afbf1dcee2ea513c50eed643f143b5d64423c388
kernel-rt-trace-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: bb9ee53ebf874aa88adbcb393eb5a9a9660fa9a0f8ae613ce02771ab0a8cd47a

Red Hat Enterprise Linux for Real Time for NFV 7

SRPM
kernel-rt-3.10.0-957.1.3.rt56.913.el7.src.rpm	SHA-256: 5b0a4858a86a250bcf968aadcba99fed71d3d8395466a4869662835de346cd0a
x86_64
kernel-rt-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: b229bc341b9a9f0a25c431c9dd7bbe8960b8ac1682eb4acb228e4d4d314b9168
kernel-rt-debug-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: ee3d3c44649fd45625c4a806f31a8ff7144b1b96d3f1b9f66886fd65280d0f3d
kernel-rt-debug-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 1408846553d707abbec4afd3d466bcdb686e821bba1f4b7c73d9855a367f8251
kernel-rt-debug-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 47688149becec5314960687754ec2d45991f52116179759e3ffcd34b3d2d4fe9
kernel-rt-debug-kvm-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 130d3e15af3afe3e9317e7f9a6ab0368681aa80da6f883720b1896ee82980e4f
kernel-rt-debug-kvm-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: a0475a4ec6fe6ac2e5a22667bdeb6c248d36a7fe9fddf1cd9814c00bc7cce613
kernel-rt-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 64a03b22c00ad36f9344cc86dd014cc7ea5cfb97b0e2a6834bbf14f2b90ac64c
kernel-rt-debuginfo-common-x86_64-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 60250e6c7e40b3b61a7ae7f45167b7bccbb2344b047054cf93993a1d58aae666
kernel-rt-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 85b4c33df35d15f3ab4f1ae5cf9d902effa3791f92f3d470557c264fa4f5c2b7
kernel-rt-doc-3.10.0-957.1.3.rt56.913.el7.noarch.rpm	SHA-256: 2cd20a2cab769c5b66a4bfaa9f5b6e031cb68177d6d18c89e1ecc19057e2c463
kernel-rt-kvm-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 1735f195b1071794a492ba4a19029f3387352480600ceacad2cdbc471783d477
kernel-rt-kvm-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 6397943f934bc19771ac1efd074790a4fd7a6538ef2732795170a663370db09d
kernel-rt-trace-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 0c9bb5317635044ce530d3d5afbf1dcee2ea513c50eed643f143b5d64423c388
kernel-rt-trace-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 6403d418d2faed4849d467b881cec4a6cdef61a77fd0edfdb8e8e217898bada4
kernel-rt-trace-devel-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: bb9ee53ebf874aa88adbcb393eb5a9a9660fa9a0f8ae613ce02771ab0a8cd47a
kernel-rt-trace-kvm-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 2560bf63bed1a83b8754abee01bf2424094e6c60e8dac8334dfb02bdff06c0fe
kernel-rt-trace-kvm-debuginfo-3.10.0-957.1.3.rt56.913.el7.x86_64.rpm	SHA-256: 43100e3f82dc7c65f711fd7b1ffc553f631afb4f283bbee2bb9cb7149368a0ee