What’s Vulnerable › Vulnerabilities

CVE-2021-20295

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-01 · updated 2026-06-17
• Weakness: CWE-125

Description

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.

Affected products

• QEMU: before 4.2.0-34 — fixed in 4.2.0-34

How to fix

Upgrade to a fixed version: QEMU 4.2.0-34. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/security/cve/CVE-2020-10756
• https://bugzilla.redhat.com/show_bug.cgi?id=1944075
• https://security.netapp.com/advisory/ntap-20220519-0003/
• https://access.redhat.com/security/cve/CVE-2020-10756
• https://bugzilla.redhat.com/show_bug.cgi?id=1944075
• https://security.netapp.com/advisory/ntap-20220519-0003/

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