QID 239918

Date Published: 2021-12-01

QID 239918: Red Hat Update for kernel-rt (RHSA-2021:4875)

the kernel-rt packages provide the real time linux kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):
  • kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free (cve-2020-36385)
  • kernel: timer tree corruption leads to missing wakeup and system freeze (cve-2021-20317)

Affected Products:

  • Red Hat enterprise linux for real time - telecommunications update service 8.2 x86_64
  • Red Hat enterprise linux for real time for nfv - telecommunications update service 8.2 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-2021:4875 Update to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239918

    CVE-2020-36385 | CVE-2021-20317 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:4875 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:4875
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].