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Red Hat Product Errata RHSA-2020:2242 - Security Advisory
Issued:
2020-05-20
Updated:
2020-05-20

RHSA-2020:2242 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kernel-rt security and bug fix update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for kernel-rt is now available for Red Hat Enterprise MRG 2.

Red Hat Product Security has rated this update as having a security impact of Important. 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: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (CVE-2017-18595)
  • kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)
  • Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)

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):

  • update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1823371)

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

  • MRG Realtime 2 x86_64

Fixes

  • BZ - 1758671 - CVE-2017-18595 kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c
  • BZ - 1786164 - CVE-2019-19768 kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c
  • BZ - 1825116 - CVE-2020-10711 Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic

CVEs

  • CVE-2017-18595
  • CVE-2019-19768
  • CVE-2020-10711

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

MRG Realtime 2

SRPM
kernel-rt-3.10.0-693.67.1.rt56.665.el6rt.src.rpm SHA-256: 875ade1180167488c26732475275005f0f1f965ca21cbe4dff9c9eb1a552bc52
x86_64
kernel-rt-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: cb93b6fbe944730fbfb5416733c5860f55cb7b70f9f1f8f7e35ff583eb5fff67
kernel-rt-debug-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: d2f2e1f983ab59e282b3bd5b31875dd0c5d25b228121046f9c9b87067a11533a
kernel-rt-debug-debuginfo-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: 4c51eb2b5f4a64efbdef91fed0503b2b4e091288b47d5d579f4ec628fa9a3864
kernel-rt-debug-devel-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: d6ecc9043d3cb5166495cf17fe86c0f029f0b1f13504e3a5b23c98cc81fc6e7a
kernel-rt-debuginfo-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: 3b8adbbaed813e4a5dd13910261cdf0687c4eb1ca1992b4c341ed8218b3462e1
kernel-rt-debuginfo-common-x86_64-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: 8dd4935f9b69e52bf1c5f70798f76c66c10077fa9d4d6054c3e7346667ffdd95
kernel-rt-devel-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: 9f8c468a80d0bd3fcd69535feed79fa15f1bee13984746f7e4d65beea5dcaccd
kernel-rt-doc-3.10.0-693.67.1.rt56.665.el6rt.noarch.rpm SHA-256: 106f9ede19e6d68c0e4ca9923585372761324d78120c47b1a84ce85d20bee57c
kernel-rt-firmware-3.10.0-693.67.1.rt56.665.el6rt.noarch.rpm SHA-256: 532be71013fccb195e5f969cab10b98f26ede618622202722df893af58f9648e
kernel-rt-trace-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: 6729cdf3206887faaca054879c50ec926c9bf6eb1f1b86a904bf0ffbbd7b6c1d
kernel-rt-trace-debuginfo-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: 51c9ecc6b72088e6e2d289415d60086bd87224dff962866aa9bddd86492bf755
kernel-rt-trace-devel-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: b587c2228bd873a429137e29887eb98cf5bb085e1656945b6edb4f14ce04bafe
kernel-rt-vanilla-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: 303cd080ab75910d2abdfba88c979d43a72aabe13d8dc132627767ffd6626cfe
kernel-rt-vanilla-debuginfo-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: e3bd4c4133be4beb1f4040c29322325de60186fb6232d3b5e4699d81dcc02533
kernel-rt-vanilla-devel-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm SHA-256: bee7ec00a965c8cb1d970c133f04bc67109a0f6ca227964814758beb20b87683

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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