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High RHSA-2021:3943 1 CVE

Red Hat Security Advisory: RHV-H security update (redhat-virtualization-host) 4.3.19

Published Sep 13, 2024 · Updated Aug 7, 2026

Ecosystem: Red Hat

Fixed packages 2

ReleasePackageFixed in
Red Hat · RHEL 7 enterprise_linux:7::hypervisor redhat-virtualization-host 0:4.3.19-20211013.0.el7_9
Red Hat · RHEL 7 enterprise_linux:7::hypervisor redhat-virtualization-host-image-update 0:4.3.19-20211013.0.el7_9

Vulnerabilities 1

  • High 8.7
    CVE-2021-22543

    Improper memory handling in Linux KVM

    An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to …

    Linux kernel Linux kernel linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • article
    https://access.redhat.com/security/updates/classification/#moderate
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1965461
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2010171
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_3943.json
  • report
    https://access.redhat.com/security/cve/CVE-2021-22543
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2021-22543
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2021-22543
  • article
    https://github.com/google/security-research/security/advisories/GHSA-7wq5-phmq-m584