QID 239902

Date Published: 2021-11-25

QID 239902: Red Hat Update for kernel (RHSA-2021:4777)

the kernel packages contain the linux kernel, the core of any linux operating system.

Security Fix(es):
  • kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free (cve-2020-36385)

Affected Products:

  • Red Hat enterprise linux server 7 x86_64
  • Red Hat enterprise linux workstation 7 x86_64
  • Red Hat enterprise linux desktop 7 x86_64
  • Red Hat enterprise linux for ibm z systems 7 s390x
  • Red Hat enterprise linux for power, big endian 7 ppc64
  • Red Hat enterprise linux for scientific computing 7 x86_64
  • Red Hat enterprise linux for power, little endian 7 ppc64le
  • Red Hat virtualization host 4 for rhel 7 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-2021:4777 Update to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239902

    CVE-2020-36385 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:4777 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:4777
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