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Red Hat Product Errata RHSA-2021:1279 - Security Advisory
Issued:
2021-04-20
Updated:
2021-04-20

RHSA-2021:1279 - 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 Linux 8.2 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

  • kernel: Use after free via PI futex state (CVE-2021-3347)
  • kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)
  • kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)
  • 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):

  • kernel-rt: update RT source tree to the latest RHEL-8.2.z8 Batch source tree (BZ#1916765)

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 - Telecommunications Update Service 8.2 x86_64
  • Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service 8.2 x86_64

Fixes

  • BZ - 1922249 - CVE-2021-3347 kernel: Use after free via PI futex state
  • BZ - 1930078 - CVE-2021-27365 kernel: heap buffer overflow in the iSCSI subsystem
  • BZ - 1930079 - CVE-2021-27363 kernel: iscsi: unrestricted access to sessions and handles
  • BZ - 1930080 - CVE-2021-27364 kernel: out-of-bounds read in libiscsi module

CVEs

  • CVE-2021-3347
  • CVE-2021-27363
  • CVE-2021-27364
  • CVE-2021-27365

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.

Red Hat Enterprise Linux for Real Time - Telecommunications Update Service 8.2

SRPM
kernel-rt-4.18.0-193.51.1.rt13.101.el8_2.src.rpm SHA-256: e64dd9e55956c4db5e25b631e9bdf36465b1424686405655bea36a06a975286d
x86_64
kernel-rt-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 3431de1b714586abe0e8362abdd586a541dab4df3507df266970be12adcb33b3
kernel-rt-core-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 82ffbcc69b547e3b51f072c3de9ac169d89704087c1e14911dd5ebb88aceceaa
kernel-rt-debug-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 6beefe1fac7c20f3d83fec11d7238bd444ca9d540adebb2022892b7dc07d0413
kernel-rt-debug-core-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 23a388f801b041d2742103ff0c1141c36944e062d41ecd128ed4d7b48a830933
kernel-rt-debug-debuginfo-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: d958df645ab0930568858434cdd2490064010b227f848bcf2ebb36a23d368b42
kernel-rt-debug-devel-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: bc996e68760ec383b2c71788ba70525d96ed28704eb41d2b219c164b9d193553
kernel-rt-debug-modules-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 699fe925cedb11c0dbe8d43cdb401b9e3db249228f022bbc6f682e55729aeb11
kernel-rt-debug-modules-extra-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 9d11dc6d66b9077bcd5f35d978651004bd68db67cf474299fad896ae58d9265e
kernel-rt-debuginfo-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: ec49f0bb8a7c183a829bbe015f1353eb01707ac54c058f7650587e4363f607b9
kernel-rt-debuginfo-common-x86_64-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: c3c10fddc3403498fcf1a8b074e00589162e498ccb7c805b646055d1035b5f91
kernel-rt-devel-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: d54df3f0948147e31673652313be4c644e6b5ad50931346abde22e440db35270
kernel-rt-modules-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 235f3fc9c80c4903da541f55c1c702fdee3379cb3cd9446268981c9ae0061bfb
kernel-rt-modules-extra-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 891e7f24bf404d55601d880af375148c0047258e5e49d51d5da7734ab24a3b39

Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service 8.2

SRPM
kernel-rt-4.18.0-193.51.1.rt13.101.el8_2.src.rpm SHA-256: e64dd9e55956c4db5e25b631e9bdf36465b1424686405655bea36a06a975286d
x86_64
kernel-rt-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 3431de1b714586abe0e8362abdd586a541dab4df3507df266970be12adcb33b3
kernel-rt-core-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 82ffbcc69b547e3b51f072c3de9ac169d89704087c1e14911dd5ebb88aceceaa
kernel-rt-debug-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 6beefe1fac7c20f3d83fec11d7238bd444ca9d540adebb2022892b7dc07d0413
kernel-rt-debug-core-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 23a388f801b041d2742103ff0c1141c36944e062d41ecd128ed4d7b48a830933
kernel-rt-debug-debuginfo-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: d958df645ab0930568858434cdd2490064010b227f848bcf2ebb36a23d368b42
kernel-rt-debug-devel-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: bc996e68760ec383b2c71788ba70525d96ed28704eb41d2b219c164b9d193553
kernel-rt-debug-kvm-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 4c75cc2cc0bc6ee892e0fc5d0ede66ed12e7483734aaa447a15720adae78d2b4
kernel-rt-debug-modules-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 699fe925cedb11c0dbe8d43cdb401b9e3db249228f022bbc6f682e55729aeb11
kernel-rt-debug-modules-extra-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 9d11dc6d66b9077bcd5f35d978651004bd68db67cf474299fad896ae58d9265e
kernel-rt-debuginfo-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: ec49f0bb8a7c183a829bbe015f1353eb01707ac54c058f7650587e4363f607b9
kernel-rt-debuginfo-common-x86_64-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: c3c10fddc3403498fcf1a8b074e00589162e498ccb7c805b646055d1035b5f91
kernel-rt-devel-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: d54df3f0948147e31673652313be4c644e6b5ad50931346abde22e440db35270
kernel-rt-kvm-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 6d96f31692a253f98ab28d692dfa1bffa5752c530e2fd8d61dc65c22ef7e8679
kernel-rt-modules-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 235f3fc9c80c4903da541f55c1c702fdee3379cb3cd9446268981c9ae0061bfb
kernel-rt-modules-extra-4.18.0-193.51.1.rt13.101.el8_2.x86_64.rpm SHA-256: 891e7f24bf404d55601d880af375148c0047258e5e49d51d5da7734ab24a3b39

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

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