CWE
416 362
Advisory Published
Advisory Published

RHSA-2021:3523: Important: kpatch-patch security update

First published: Tue Sep 14 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: Use after free via PI futex state (CVE-2021-3347)</li> <li> kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)</li> <li> kernel: race condition for removal of the HCI controller (CVE-2021-32399)</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_0-1062_36_1-1-5.el7
3_10_0-1062_36_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_37_1-1-5.el7
3_10_0-1062_37_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_40_1-1-5.el7
3_10_0-1062_40_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_43_1-1-5.el7
3_10_0-1062_43_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_45_1-1-5.el7
3_10_0-1062_45_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_46_1-1-4.el7
3_10_0-1062_46_1-1-4.el7
redhat/kpatch-patch<3_10_0-1062_49_1-1-2.el7
3_10_0-1062_49_1-1-2.el7
redhat/kpatch-patch<3_10_0-1062_51_1-1-2.el7
3_10_0-1062_51_1-1-2.el7
redhat/kpatch-patch<3_10_0-1062_52_2-1-1.el7
3_10_0-1062_52_2-1-1.el7
redhat/kpatch-patch<3_10_0-1062_36_1-1-5.el7
3_10_0-1062_36_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_36_1-debuginfo-1-5.el7
3_10_0-1062_36_1-debuginfo-1-5.el7
redhat/kpatch-patch<3_10_0-1062_37_1-1-5.el7
3_10_0-1062_37_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_37_1-debuginfo-1-5.el7
3_10_0-1062_37_1-debuginfo-1-5.el7
redhat/kpatch-patch<3_10_0-1062_40_1-1-5.el7
3_10_0-1062_40_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_40_1-debuginfo-1-5.el7
3_10_0-1062_40_1-debuginfo-1-5.el7
redhat/kpatch-patch<3_10_0-1062_43_1-1-5.el7
3_10_0-1062_43_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_43_1-debuginfo-1-5.el7
3_10_0-1062_43_1-debuginfo-1-5.el7
redhat/kpatch-patch<3_10_0-1062_45_1-1-5.el7
3_10_0-1062_45_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_45_1-debuginfo-1-5.el7
3_10_0-1062_45_1-debuginfo-1-5.el7
redhat/kpatch-patch<3_10_0-1062_46_1-1-4.el7
3_10_0-1062_46_1-1-4.el7
redhat/kpatch-patch<3_10_0-1062_46_1-debuginfo-1-4.el7
3_10_0-1062_46_1-debuginfo-1-4.el7
redhat/kpatch-patch<3_10_0-1062_49_1-1-2.el7
3_10_0-1062_49_1-1-2.el7
redhat/kpatch-patch<3_10_0-1062_49_1-debuginfo-1-2.el7
3_10_0-1062_49_1-debuginfo-1-2.el7
redhat/kpatch-patch<3_10_0-1062_51_1-1-2.el7
3_10_0-1062_51_1-1-2.el7
redhat/kpatch-patch<3_10_0-1062_51_1-debuginfo-1-2.el7
3_10_0-1062_51_1-debuginfo-1-2.el7
redhat/kpatch-patch<3_10_0-1062_52_2-1-1.el7
3_10_0-1062_52_2-1-1.el7
redhat/kpatch-patch<3_10_0-1062_52_2-debuginfo-1-1.el7
3_10_0-1062_52_2-debuginfo-1-1.el7
redhat/kpatch-patch<3_10_0-1062_36_1-1-5.el7
3_10_0-1062_36_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_36_1-debuginfo-1-5.el7
3_10_0-1062_36_1-debuginfo-1-5.el7
redhat/kpatch-patch<3_10_0-1062_37_1-1-5.el7
3_10_0-1062_37_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_37_1-debuginfo-1-5.el7
3_10_0-1062_37_1-debuginfo-1-5.el7
redhat/kpatch-patch<3_10_0-1062_40_1-1-5.el7
3_10_0-1062_40_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_40_1-debuginfo-1-5.el7
3_10_0-1062_40_1-debuginfo-1-5.el7
redhat/kpatch-patch<3_10_0-1062_43_1-1-5.el7
3_10_0-1062_43_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_43_1-debuginfo-1-5.el7
3_10_0-1062_43_1-debuginfo-1-5.el7
redhat/kpatch-patch<3_10_0-1062_45_1-1-5.el7
3_10_0-1062_45_1-1-5.el7
redhat/kpatch-patch<3_10_0-1062_45_1-debuginfo-1-5.el7
3_10_0-1062_45_1-debuginfo-1-5.el7
redhat/kpatch-patch<3_10_0-1062_46_1-1-4.el7
3_10_0-1062_46_1-1-4.el7
redhat/kpatch-patch<3_10_0-1062_46_1-debuginfo-1-4.el7
3_10_0-1062_46_1-debuginfo-1-4.el7
redhat/kpatch-patch<3_10_0-1062_49_1-1-2.el7
3_10_0-1062_49_1-1-2.el7
redhat/kpatch-patch<3_10_0-1062_49_1-debuginfo-1-2.el7
3_10_0-1062_49_1-debuginfo-1-2.el7
redhat/kpatch-patch<3_10_0-1062_51_1-1-2.el7
3_10_0-1062_51_1-1-2.el7
redhat/kpatch-patch<3_10_0-1062_51_1-debuginfo-1-2.el7
3_10_0-1062_51_1-debuginfo-1-2.el7
redhat/kpatch-patch<3_10_0-1062_52_2-1-1.el7
3_10_0-1062_52_2-1-1.el7
redhat/kpatch-patch<3_10_0-1062_52_2-debuginfo-1-1.el7
3_10_0-1062_52_2-debuginfo-1-1.el7

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Reference Links

Frequently Asked Questions

  • What are the security issues addressed in RHSA-2021:3523?

    RHSA-2021:3523 addresses a use-after-free vulnerability via PI futex state (CVE-2021-3347) and an out-of-bounds write in xt_compat_target.

  • What is the severity of RHSA-2021:3523?

    RHSA-2021:3523 has been classified as a critical severity vulnerability.

  • How do I fix RHSA-2021:3523?

    To fix RHSA-2021:3523, you should update the kpatch-patch package to one of the remedied versions listed in the advisory.

  • Can RHSA-2021:3523 affect my kernel's stability and security?

    Yes, vulnerabilities in RHSA-2021:3523 can significantly compromise your kernel's stability and security.

  • Which versions of kpatch-patch are affected by RHSA-2021:3523?

    RHSA-2021:3523 affects multiple versions of the kpatch-patch package, including those prior to 3_10_0-1062_52_2-1-1.el7.

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