Issued:
2021-04-27
Updated:
2021-04-27

RHSA-2021:1376 - Important: kernel security and bug fix update

Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.6 Extended Update Support.

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 packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

  • kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)

  • kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)

  • kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)

  • kernel: use-after-free in fs/block_dev.c (CVE-2020-15436)

  • kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)

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):

  • [infiniband] Backport Request to fix Multicast Sendonly joins (BZ#1937820)

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

ProductVersionArch
Red Hat Virtualization Host - Extended Update Support4.2x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions7.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support7.6x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support7.6ppc64le
Red Hat Enterprise Linux for Power, big endian - Extended Update Support7.6ppc64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support7.6s390x
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions7.6ppc64le
Red Hat Enterprise Linux Server - TUS7.6x86_64
Red Hat Enterprise Linux Server - AUS7.6x86_64
Red Hat Enterprise Linux EUS Compute Node7.6x86_64

Updated Packages

  • kernel-devel-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-tools-libs-devel-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-headers-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-debug-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-debug-devel-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-doc-3.10.0-957.72.1.el7.noarch.rpm
  • kernel-bootwrapper-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-3.10.0-957.72.1.el7.src.rpm
  • kernel-tools-libs-3.10.0-957.72.1.el7.ppc64.rpm
  • bpftool-3.10.0-957.72.1.el7.x86_64.rpm
  • perf-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-headers-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-debug-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-debug-devel-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-tools-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-debug-debuginfo-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-tools-libs-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-tools-libs-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-debuginfo-common-ppc64le-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-debug-devel-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-tools-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm
  • perf-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-tools-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-debug-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-tools-libs-devel-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-kdump-debuginfo-3.10.0-957.72.1.el7.s390x.rpm
  • python-perf-3.10.0-957.72.1.el7.ppc64.rpm
  • python-perf-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-tools-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-devel-3.10.0-957.72.1.el7.ppc64.rpm
  • python-perf-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-debuginfo-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-devel-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-devel-3.10.0-957.72.1.el7.x86_64.rpm
  • python-perf-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-debuginfo-common-x86_64-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-headers-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-debug-debuginfo-3.10.0-957.72.1.el7.x86_64.rpm
  • python-perf-3.10.0-957.72.1.el7.x86_64.rpm
  • python-perf-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-abi-whitelists-3.10.0-957.72.1.el7.noarch.rpm
  • kernel-debuginfo-common-s390x-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-tools-3.10.0-957.72.1.el7.ppc64.rpm
  • perf-3.10.0-957.72.1.el7.x86_64.rpm
  • perf-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-debug-devel-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-debug-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-kdump-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-debuginfo-common-ppc64-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-debug-3.10.0-957.72.1.el7.ppc64le.rpm
  • kernel-kdump-devel-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-debug-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-tools-3.10.0-957.72.1.el7.ppc64le.rpm
  • perf-3.10.0-957.72.1.el7.ppc64le.rpm
  • perf-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-bootwrapper-3.10.0-957.72.1.el7.ppc64le.rpm
  • perf-debuginfo-3.10.0-957.72.1.el7.s390x.rpm
  • python-perf-debuginfo-3.10.0-957.72.1.el7.ppc64le.rpm
  • python-perf-debuginfo-3.10.0-957.72.1.el7.s390x.rpm
  • kernel-3.10.0-957.72.1.el7.x86_64.rpm
  • kernel-tools-libs-devel-3.10.0-957.72.1.el7.ppc64.rpm
  • kernel-headers-3.10.0-957.72.1.el7.x86_64.rpm
  • perf-debuginfo-3.10.0-957.72.1.el7.ppc64.rpm

Fixes

CVEs

References

Additional information