CWE
416
Advisory Published
Advisory Published

RHSA-2021:0940: Important: kpatch-patch security update

First published: Thu Mar 18 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.<br>Security Fix(es):<br><li> kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)</li> 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 SoftwareAffected VersionHow to fix
redhat/kpatch-patch<3_10_0-957_46_1-1-4.el7
3_10_0-957_46_1-1-4.el7
redhat/kpatch-patch<3_10_0-957_48_1-1-4.el7
3_10_0-957_48_1-1-4.el7
redhat/kpatch-patch<3_10_0-957_54_1-1-1.el7
3_10_0-957_54_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_56_1-1-1.el7
3_10_0-957_56_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_58_2-1-1.el7
3_10_0-957_58_2-1-1.el7
redhat/kpatch-patch<3_10_0-957_61_1-1-1.el7
3_10_0-957_61_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_61_2-1-1.el7
3_10_0-957_61_2-1-1.el7
redhat/kpatch-patch<3_10_0-957_62_1-1-1.el7
3_10_0-957_62_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_65_1-1-1.el7
3_10_0-957_65_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_66_1-1-1.el7
3_10_0-957_66_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_46_1-1-4.el7
3_10_0-957_46_1-1-4.el7
redhat/kpatch-patch<3_10_0-957_48_1-1-4.el7
3_10_0-957_48_1-1-4.el7
redhat/kpatch-patch<3_10_0-957_54_1-1-1.el7
3_10_0-957_54_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_54_1-debuginfo-1-1.el7
3_10_0-957_54_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_56_1-1-1.el7
3_10_0-957_56_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_56_1-debuginfo-1-1.el7
3_10_0-957_56_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_58_2-1-1.el7
3_10_0-957_58_2-1-1.el7
redhat/kpatch-patch<3_10_0-957_58_2-debuginfo-1-1.el7
3_10_0-957_58_2-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_61_1-1-1.el7
3_10_0-957_61_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_61_1-debuginfo-1-1.el7
3_10_0-957_61_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_61_2-1-1.el7
3_10_0-957_61_2-1-1.el7
redhat/kpatch-patch<3_10_0-957_61_2-debuginfo-1-1.el7
3_10_0-957_61_2-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_62_1-1-1.el7
3_10_0-957_62_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_62_1-debuginfo-1-1.el7
3_10_0-957_62_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_65_1-1-1.el7
3_10_0-957_65_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_65_1-debuginfo-1-1.el7
3_10_0-957_65_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_66_1-1-1.el7
3_10_0-957_66_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_66_1-debuginfo-1-1.el7
3_10_0-957_66_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_46_1-1-4.el7
3_10_0-957_46_1-1-4.el7
redhat/kpatch-patch<3_10_0-957_48_1-1-4.el7
3_10_0-957_48_1-1-4.el7
redhat/kpatch-patch<3_10_0-957_54_1-1-1.el7
3_10_0-957_54_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_54_1-debuginfo-1-1.el7
3_10_0-957_54_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_56_1-1-1.el7
3_10_0-957_56_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_56_1-debuginfo-1-1.el7
3_10_0-957_56_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_58_2-1-1.el7
3_10_0-957_58_2-1-1.el7
redhat/kpatch-patch<3_10_0-957_58_2-debuginfo-1-1.el7
3_10_0-957_58_2-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_61_1-1-1.el7
3_10_0-957_61_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_61_1-debuginfo-1-1.el7
3_10_0-957_61_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_61_2-1-1.el7
3_10_0-957_61_2-1-1.el7
redhat/kpatch-patch<3_10_0-957_61_2-debuginfo-1-1.el7
3_10_0-957_61_2-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_62_1-1-1.el7
3_10_0-957_62_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_62_1-debuginfo-1-1.el7
3_10_0-957_62_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_65_1-1-1.el7
3_10_0-957_65_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_65_1-debuginfo-1-1.el7
3_10_0-957_65_1-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-957_66_1-1-1.el7
3_10_0-957_66_1-1-1.el7
redhat/kpatch-patch<3_10_0-957_66_1-debuginfo-1-1.el7
3_10_0-957_66_1-debuginfo-1-1.el7

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Reference Links

Frequently Asked Questions

  • What is the severity of RHSA-2021:0940?

    The severity of RHSA-2021:0940 is considered important due to its potential for use-after-free vulnerabilities.

  • How do I fix RHSA-2021:0940?

    To fix RHSA-2021:0940, update the kpatch-patch package to the recommended versions listed in the advisory.

  • What is the impact of the vulnerability in RHSA-2021:0940?

    The impact of the vulnerability in RHSA-2021:0940 could lead to system crashes or arbitrary code execution by exploiting the use-after-free issue.

  • Which versions of kpatch-patch are affected by RHSA-2021:0940?

    Kpatch-patch versions prior to 3_10_0-957_46_1-1-4.el7 are affected by RHSA-2021:0940.

  • Is there a workaround for RHSA-2021:0940?

    There are no specific workarounds suggested for RHSA-2021:0940, applying the patch is recommended.

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