RHSA-2021:4644: Important: kpatch-patch security update

Published Nov 15, 2021
·
Updated

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.Security Fix(es): kernel: Insufficient validation of user-supplied sizes for the MSGCRYPTO message type (CVE-2021-43267) 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.

Affected Software

56 affected componentsFixes available
redhat/kpatch-patch<4_18_0-305-1-8.el8
4_18_0-305-1-8.el8
redhat/kpatch-patch<4_18_0-305_10_2-1-5.el8_4
4_18_0-305_10_2-1-5.el8_4
redhat/kpatch-patch<4_18_0-305_12_1-1-4.el8_4
4_18_0-305_12_1-1-4.el8_4
redhat/kpatch-patch<4_18_0-305_17_1-1-3.el8_4
4_18_0-305_17_1-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_19_1-1-3.el8_4
4_18_0-305_19_1-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_25_1-1-2.el8_4
4_18_0-305_25_1-1-2.el8_4
redhat/kpatch-patch<4_18_0-305_3_1-1-7.el8_4
4_18_0-305_3_1-1-7.el8_4
redhat/kpatch-patch<4_18_0-305_7_1-1-6.el8_4
4_18_0-305_7_1-1-6.el8_4
redhat/kpatch-patch<4_18_0-305-1-8.el8
4_18_0-305-1-8.el8
redhat/kpatch-patch<4_18_0-305-debuginfo-1-8.el8
4_18_0-305-debuginfo-1-8.el8
redhat/kpatch-patch<4_18_0-305-debugsource-1-8.el8
4_18_0-305-debugsource-1-8.el8
redhat/kpatch-patch<4_18_0-305_10_2-1-5.el8_4
4_18_0-305_10_2-1-5.el8_4
redhat/kpatch-patch<4_18_0-305_10_2-debuginfo-1-5.el8_4
4_18_0-305_10_2-debuginfo-1-5.el8_4
redhat/kpatch-patch<4_18_0-305_10_2-debugsource-1-5.el8_4
4_18_0-305_10_2-debugsource-1-5.el8_4
redhat/kpatch-patch<4_18_0-305_12_1-1-4.el8_4
4_18_0-305_12_1-1-4.el8_4
redhat/kpatch-patch<4_18_0-305_12_1-debuginfo-1-4.el8_4
4_18_0-305_12_1-debuginfo-1-4.el8_4
redhat/kpatch-patch<4_18_0-305_12_1-debugsource-1-4.el8_4
4_18_0-305_12_1-debugsource-1-4.el8_4
redhat/kpatch-patch<4_18_0-305_17_1-1-3.el8_4
4_18_0-305_17_1-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_17_1-debuginfo-1-3.el8_4
4_18_0-305_17_1-debuginfo-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_17_1-debugsource-1-3.el8_4
4_18_0-305_17_1-debugsource-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_19_1-1-3.el8_4
4_18_0-305_19_1-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_19_1-debuginfo-1-3.el8_4
4_18_0-305_19_1-debuginfo-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_19_1-debugsource-1-3.el8_4
4_18_0-305_19_1-debugsource-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_25_1-1-2.el8_4
4_18_0-305_25_1-1-2.el8_4
redhat/kpatch-patch<4_18_0-305_25_1-debuginfo-1-2.el8_4
4_18_0-305_25_1-debuginfo-1-2.el8_4
redhat/kpatch-patch<4_18_0-305_25_1-debugsource-1-2.el8_4
4_18_0-305_25_1-debugsource-1-2.el8_4
redhat/kpatch-patch<4_18_0-305_3_1-1-7.el8_4
4_18_0-305_3_1-1-7.el8_4
redhat/kpatch-patch<4_18_0-305_3_1-debuginfo-1-7.el8_4
4_18_0-305_3_1-debuginfo-1-7.el8_4
redhat/kpatch-patch<4_18_0-305_3_1-debugsource-1-7.el8_4
4_18_0-305_3_1-debugsource-1-7.el8_4
redhat/kpatch-patch<4_18_0-305_7_1-1-6.el8_4
4_18_0-305_7_1-1-6.el8_4
redhat/kpatch-patch<4_18_0-305_7_1-debuginfo-1-6.el8_4
4_18_0-305_7_1-debuginfo-1-6.el8_4
redhat/kpatch-patch<4_18_0-305_7_1-debugsource-1-6.el8_4
4_18_0-305_7_1-debugsource-1-6.el8_4
redhat/kpatch-patch<4_18_0-305-1-8.el8
4_18_0-305-1-8.el8
redhat/kpatch-patch<4_18_0-305-debuginfo-1-8.el8
4_18_0-305-debuginfo-1-8.el8
redhat/kpatch-patch<4_18_0-305-debugsource-1-8.el8
4_18_0-305-debugsource-1-8.el8
redhat/kpatch-patch<4_18_0-305_10_2-1-5.el8_4
4_18_0-305_10_2-1-5.el8_4
redhat/kpatch-patch<4_18_0-305_10_2-debuginfo-1-5.el8_4
4_18_0-305_10_2-debuginfo-1-5.el8_4
redhat/kpatch-patch<4_18_0-305_10_2-debugsource-1-5.el8_4
4_18_0-305_10_2-debugsource-1-5.el8_4
redhat/kpatch-patch<4_18_0-305_12_1-1-4.el8_4
4_18_0-305_12_1-1-4.el8_4
redhat/kpatch-patch<4_18_0-305_12_1-debuginfo-1-4.el8_4
4_18_0-305_12_1-debuginfo-1-4.el8_4
redhat/kpatch-patch<4_18_0-305_12_1-debugsource-1-4.el8_4
4_18_0-305_12_1-debugsource-1-4.el8_4
redhat/kpatch-patch<4_18_0-305_17_1-1-3.el8_4
4_18_0-305_17_1-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_17_1-debuginfo-1-3.el8_4
4_18_0-305_17_1-debuginfo-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_17_1-debugsource-1-3.el8_4
4_18_0-305_17_1-debugsource-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_19_1-1-3.el8_4
4_18_0-305_19_1-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_19_1-debuginfo-1-3.el8_4
4_18_0-305_19_1-debuginfo-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_19_1-debugsource-1-3.el8_4
4_18_0-305_19_1-debugsource-1-3.el8_4
redhat/kpatch-patch<4_18_0-305_25_1-1-2.el8_4
4_18_0-305_25_1-1-2.el8_4
redhat/kpatch-patch<4_18_0-305_25_1-debuginfo-1-2.el8_4
4_18_0-305_25_1-debuginfo-1-2.el8_4
redhat/kpatch-patch<4_18_0-305_25_1-debugsource-1-2.el8_4
4_18_0-305_25_1-debugsource-1-2.el8_4
redhat/kpatch-patch<4_18_0-305_3_1-1-7.el8_4
4_18_0-305_3_1-1-7.el8_4
redhat/kpatch-patch<4_18_0-305_3_1-debuginfo-1-7.el8_4
4_18_0-305_3_1-debuginfo-1-7.el8_4
redhat/kpatch-patch<4_18_0-305_3_1-debugsource-1-7.el8_4
4_18_0-305_3_1-debugsource-1-7.el8_4
redhat/kpatch-patch<4_18_0-305_7_1-1-6.el8_4
4_18_0-305_7_1-1-6.el8_4
redhat/kpatch-patch<4_18_0-305_7_1-debuginfo-1-6.el8_4
4_18_0-305_7_1-debuginfo-1-6.el8_4
redhat/kpatch-patch<4_18_0-305_7_1-debugsource-1-6.el8_4
4_18_0-305_7_1-debugsource-1-6.el8_4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305-1-8.el8
  2. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_10_2-1-5.el8_4
  3. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_12_1-1-4.el8_4
  4. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_17_1-1-3.el8_4
  5. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_19_1-1-3.el8_4
  6. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_25_1-1-2.el8_4
  7. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_3_1-1-7.el8_4
  8. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_7_1-1-6.el8_4
  9. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305-debuginfo-1-8.el8
  10. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305-debugsource-1-8.el8
  11. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_10_2-debuginfo-1-5.el8_4
  12. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_10_2-debugsource-1-5.el8_4
  13. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_12_1-debuginfo-1-4.el8_4
  14. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_12_1-debugsource-1-4.el8_4
  15. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_17_1-debuginfo-1-3.el8_4
  16. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_17_1-debugsource-1-3.el8_4
  17. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_19_1-debuginfo-1-3.el8_4
  18. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_19_1-debugsource-1-3.el8_4
  19. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_25_1-debuginfo-1-2.el8_4
  20. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_25_1-debugsource-1-2.el8_4
  21. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_3_1-debuginfo-1-7.el8_4
  22. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_3_1-debugsource-1-7.el8_4
  23. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_7_1-debuginfo-1-6.el8_4
  24. Upgrade

    Upgrade redhat/kpatch-patch to a version that resolves this vulnerability.

    Fixed in 4_18_0-305_7_1-debugsource-1-6.el8_4

Event History

Apr 5, 2026
Advisory Published
via Red Hat·07:00 PM
Data Sourced
via Red Hat·07:00 PM
RemedyDescriptionAffected Software

Frequently Asked Questions

1

What is the severity of RHSA-2021:4644?

The severity of RHSA-2021:4644 is classified as important.

2

How do I fix RHSA-2021:4644?

To fix RHSA-2021:4644, update the kpatch-patch package to the latest version specified in the advisory.

3

What does RHSA-2021:4644 address?

RHSA-2021:4644 addresses insufficient validation of user-supplied sizes for the MSG_CRYPTO message type (CVE-2021-43267).

4

What versions of kpatch-patch are affected by RHSA-2021:4644?

Versions of kpatch-patch prior to the specified remedial updates in RHSA-2021:4644 are affected.

5

Is there a known exploit for RHSA-2021:4644?

As of now, there are no known exploits specifically associated with RHSA-2021:4644.

Company

Resources

Contact

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