QID 239772

Date Published: 2021-11-10

QID 239772: Red Hat Update for kpatch-patch (RHSA-2021:4122)

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: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free

Affected Products:

  • Red Hat enterprise linux for x86_64 8 x86_64
  • Red Hat enterprise linux for x86_64 - extended update support 8.4 x86_64
  • Red Hat enterprise linux server - aus 8.4 x86_64
  • Red Hat enterprise linux for power, little endian 8 ppc64le
  • Red Hat enterprise linux for power, little endian - extended update support 8.4 ppc64le
  • Red Hat enterprise linux server - tus 8.4 x86_64
  • Red Hat enterprise linux server (for ibm power le) - update services for sap solutions 8.4 ppc64le
  • Red Hat enterprise linux server - update services for sap solutions 8.4 x86_64



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as High - 6.8 severity.
    • Solution
    Upgrade to the latest packages which contain a patch.

    Refer to Refer to :
    Applying Package Updates to RHEL system     for details.

    Refer to Red Hat security advisory RHSA-2021:4122 Update to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239772

    CVE-2020-36385 | CVE-2021-0512 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:4122 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:4122
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