QID 239974

Date Published: 2021-12-22

QID 239974: Red Hat Update for kernel (RHSA-2021:5227)

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

Security Fix(es):
  • kernel: in overlayfs missing a check for a negative dentry before calling vfs_rename() (cve-2021-20321)

Affected Products:

  • Red Hat enterprise linux for x86_64 8 x86_64
  • Red Hat enterprise linux for ibm z systems 8 s390x
  • Red Hat enterprise linux for power, little endian 8 ppc64le
  • Red Hat enterprise linux for arm 64 8 aarch64
  • Red Hat codeready linux builder for x86_64 8 x86_64
  • Red Hat codeready linux builder for power, little endian 8 ppc64le
  • Red Hat codeready linux builder for arm 64 8 aarch64



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.

Successful exploitation of this vulnerability could lead to a security breach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as Medium - 4.2 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Refer to Red Hat security advisory RHSA-2021:5227 for updates and patch information.
    Vendor References

    CVEs related to QID 239974

    CVE-2021-20321 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:5227 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:5227
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