It was discovered that the update for the virt:rhel module in the RHSA-2020:4676 (https://access.redhat.com/errata/RHSA-2020:4676) erratum released as part of Red Hat Enterprise Linux 8.3 failed to include the fix for the qemu-kvm component issue CVE-2020-10756, which was previously corrected in virt:rhel/qemu-kvm via erratum RHSA-2020:4059 (https://access.redhat.com/errata/RHSA-2020:4059). CVE-2021-20295 was assigned to that Red Hat specific security regression.
For more details about the original security issue CVE-2020-10756, refer to bug 1835986 or the CVE page: https://access.redhat.com/security/cve/CVE-2020-10756.
This issue affects the versions of `qemu-kvm` as shipped with Red Hat Enterprise Linux 8.3 release. The fix for the original CVE-2020-10756 issue was not included in the 8.3 release, leading to a security regression.
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2021:1064 https://access.redhat.com/errata/RHSA-2021:1064
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):