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Red Hat Product Errata RHSA-2021:4404 - Security Advisory
Issued:
2021-11-09
Updated:
2021-11-09

RHSA-2021:4404 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Low: kexec-tools security, bug fix, and enhancement update

Type/Severity

Security Advisory: Low

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for kexec-tools is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Low. 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 kexec-tools packages contain the /sbin/kexec binary and utilities that together form the user-space component of the kernel's kexec feature. The /sbin/kexec binary facilitates a new kernel to boot using the kernel's kexec feature either on a normal or a panic reboot. The kexec fastboot mechanism allows booting a Linux kernel from the context of an already running kernel.

Security Fix(es):

  • kexec-tools: incorrect permissions on kdump dmesg file (CVE-2021-20269)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.

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

Affected Products

  • Red Hat Enterprise Linux for x86_64 8 x86_64
  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
  • Red Hat Enterprise Linux Server - AUS 8.6 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 8 s390x
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
  • Red Hat Enterprise Linux for Power, little endian 8 ppc64le
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
  • Red Hat Enterprise Linux Server - TUS 8.6 x86_64
  • Red Hat Enterprise Linux for ARM 64 8 aarch64
  • Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64

Fixes

  • BZ - 1892558 - kdump: provide a library API to export suggested crashkernel reservation values
  • BZ - 1915819 - perror_exit call inside check_user_configured_target() function is not providing absolute path of dump location upon kdump service failure.
  • BZ - 1918499 - kdump initrd generation fails if /boot not writable
  • BZ - 1934261 - CVE-2021-20269 kexec-tools: incorrect permissions on kdump dmesg file
  • BZ - 1965267 - [RHEL-8.5][ppc64le] makedumpfile failed to copy /proc/kcore that 'get_mm_sparsemem: Can't get the address of mem_section' or output nothing

CVEs

  • CVE-2021-20269

References

  • https://access.redhat.com/security/updates/classification/#low
  • https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux for x86_64 8

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
x86_64
kexec-tools-2.0.20-57.el8.x86_64.rpm SHA-256: f6f157776ee3fe21dd7af7a5af8dc55e25420cda37d01051d0e9746c68e508c0
kexec-tools-debuginfo-2.0.20-57.el8.x86_64.rpm SHA-256: bbabc2fdbc70047dd63b144ef73f6433d6f14a94c4a6b68c9d91f8bbed6a1fee
kexec-tools-debugsource-2.0.20-57.el8.x86_64.rpm SHA-256: f5cc7879a7f481bc4411d7d9dca4ebbbbed7ae67f3301032339227b290fa3b09

Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
x86_64
kexec-tools-2.0.20-57.el8.x86_64.rpm SHA-256: f6f157776ee3fe21dd7af7a5af8dc55e25420cda37d01051d0e9746c68e508c0
kexec-tools-debuginfo-2.0.20-57.el8.x86_64.rpm SHA-256: bbabc2fdbc70047dd63b144ef73f6433d6f14a94c4a6b68c9d91f8bbed6a1fee
kexec-tools-debugsource-2.0.20-57.el8.x86_64.rpm SHA-256: f5cc7879a7f481bc4411d7d9dca4ebbbbed7ae67f3301032339227b290fa3b09

Red Hat Enterprise Linux Server - AUS 8.6

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
x86_64
kexec-tools-2.0.20-57.el8.x86_64.rpm SHA-256: f6f157776ee3fe21dd7af7a5af8dc55e25420cda37d01051d0e9746c68e508c0
kexec-tools-debuginfo-2.0.20-57.el8.x86_64.rpm SHA-256: bbabc2fdbc70047dd63b144ef73f6433d6f14a94c4a6b68c9d91f8bbed6a1fee
kexec-tools-debugsource-2.0.20-57.el8.x86_64.rpm SHA-256: f5cc7879a7f481bc4411d7d9dca4ebbbbed7ae67f3301032339227b290fa3b09

Red Hat Enterprise Linux for IBM z Systems 8

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
s390x
kexec-tools-2.0.20-57.el8.s390x.rpm SHA-256: 0c301a50f2ba19166544b0997876d4ab0a6f10ec94fa7c0dd6efd039ff1936c9
kexec-tools-debuginfo-2.0.20-57.el8.s390x.rpm SHA-256: e4dd9f19c007af5e108ffb5b6756a1e4258f7fd0ac71c90da98fc93913fad2e5
kexec-tools-debugsource-2.0.20-57.el8.s390x.rpm SHA-256: c92f90e97adb7237ef1648bc43c9f4b1577b460c9a582dc4bf5da46b5a226d9e

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
s390x
kexec-tools-2.0.20-57.el8.s390x.rpm SHA-256: 0c301a50f2ba19166544b0997876d4ab0a6f10ec94fa7c0dd6efd039ff1936c9
kexec-tools-debuginfo-2.0.20-57.el8.s390x.rpm SHA-256: e4dd9f19c007af5e108ffb5b6756a1e4258f7fd0ac71c90da98fc93913fad2e5
kexec-tools-debugsource-2.0.20-57.el8.s390x.rpm SHA-256: c92f90e97adb7237ef1648bc43c9f4b1577b460c9a582dc4bf5da46b5a226d9e

Red Hat Enterprise Linux for Power, little endian 8

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
ppc64le
kexec-tools-2.0.20-57.el8.ppc64le.rpm SHA-256: 72c9cf0016726228ee50b3c49b3c3e3ffeec92b8df17630e7650368d9bbfc298
kexec-tools-debuginfo-2.0.20-57.el8.ppc64le.rpm SHA-256: 8f7aa96ce196280935a9ee7407160c8bad57450ded85cd310a60c3d810ffc6df
kexec-tools-debugsource-2.0.20-57.el8.ppc64le.rpm SHA-256: eec02dc6c4fab5cc2ea9e02fd573ee5fdba9bd25348fb5e60e43b543a3273542

Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
ppc64le
kexec-tools-2.0.20-57.el8.ppc64le.rpm SHA-256: 72c9cf0016726228ee50b3c49b3c3e3ffeec92b8df17630e7650368d9bbfc298
kexec-tools-debuginfo-2.0.20-57.el8.ppc64le.rpm SHA-256: 8f7aa96ce196280935a9ee7407160c8bad57450ded85cd310a60c3d810ffc6df
kexec-tools-debugsource-2.0.20-57.el8.ppc64le.rpm SHA-256: eec02dc6c4fab5cc2ea9e02fd573ee5fdba9bd25348fb5e60e43b543a3273542

Red Hat Enterprise Linux Server - TUS 8.6

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
x86_64
kexec-tools-2.0.20-57.el8.x86_64.rpm SHA-256: f6f157776ee3fe21dd7af7a5af8dc55e25420cda37d01051d0e9746c68e508c0
kexec-tools-debuginfo-2.0.20-57.el8.x86_64.rpm SHA-256: bbabc2fdbc70047dd63b144ef73f6433d6f14a94c4a6b68c9d91f8bbed6a1fee
kexec-tools-debugsource-2.0.20-57.el8.x86_64.rpm SHA-256: f5cc7879a7f481bc4411d7d9dca4ebbbbed7ae67f3301032339227b290fa3b09

Red Hat Enterprise Linux for ARM 64 8

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
aarch64
kexec-tools-2.0.20-57.el8.aarch64.rpm SHA-256: 80ab6c0a0514da822830e0d2d4272cd021e02051090528c831625d5a6b899128
kexec-tools-debuginfo-2.0.20-57.el8.aarch64.rpm SHA-256: 65330e4597ff894fb5f539896466682eec443a3b5c674a63599a46edc562d8b2
kexec-tools-debugsource-2.0.20-57.el8.aarch64.rpm SHA-256: 85fc6588715a79f1930e708c83c4e3f3b5a6d840fd98054d2e62fac098734b4a

Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
aarch64
kexec-tools-2.0.20-57.el8.aarch64.rpm SHA-256: 80ab6c0a0514da822830e0d2d4272cd021e02051090528c831625d5a6b899128
kexec-tools-debuginfo-2.0.20-57.el8.aarch64.rpm SHA-256: 65330e4597ff894fb5f539896466682eec443a3b5c674a63599a46edc562d8b2
kexec-tools-debugsource-2.0.20-57.el8.aarch64.rpm SHA-256: 85fc6588715a79f1930e708c83c4e3f3b5a6d840fd98054d2e62fac098734b4a

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
ppc64le
kexec-tools-2.0.20-57.el8.ppc64le.rpm SHA-256: 72c9cf0016726228ee50b3c49b3c3e3ffeec92b8df17630e7650368d9bbfc298
kexec-tools-debuginfo-2.0.20-57.el8.ppc64le.rpm SHA-256: 8f7aa96ce196280935a9ee7407160c8bad57450ded85cd310a60c3d810ffc6df
kexec-tools-debugsource-2.0.20-57.el8.ppc64le.rpm SHA-256: eec02dc6c4fab5cc2ea9e02fd573ee5fdba9bd25348fb5e60e43b543a3273542

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6

SRPM
kexec-tools-2.0.20-57.el8.src.rpm SHA-256: 5a2506c19f623845b09c5fd6759d81a5864a28f0af40cea62b453b9d5ab3e66a
x86_64
kexec-tools-2.0.20-57.el8.x86_64.rpm SHA-256: f6f157776ee3fe21dd7af7a5af8dc55e25420cda37d01051d0e9746c68e508c0
kexec-tools-debuginfo-2.0.20-57.el8.x86_64.rpm SHA-256: bbabc2fdbc70047dd63b144ef73f6433d6f14a94c4a6b68c9d91f8bbed6a1fee
kexec-tools-debugsource-2.0.20-57.el8.x86_64.rpm SHA-256: f5cc7879a7f481bc4411d7d9dca4ebbbbed7ae67f3301032339227b290fa3b09

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

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