What’s Vulnerable › Vulnerabilities

CVE-2021-3611

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-05-11 · updated 2026-06-17
• Weakness: CWE-119

Description

A stack overflow vulnerability was found in the Intel HD Audio device (intel-hda) of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability. This flaw affects QEMU versions prior to 7.0.0.

Affected products

• QEMU: before 7.0.0 — fixed in 7.0.0
• Red Hat Enterprise Linux: 8.0

How to fix

Upgrade to a fixed version: QEMU 7.0.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1973784
• https://gitlab.com/qemu-project/qemu/-/issues/542
• https://security.gentoo.org/glsa/202208-27
• https://security.netapp.com/advisory/ntap-20220624-0001/
• https://bugzilla.redhat.com/show_bug.cgi?id=1973784
• https://gitlab.com/qemu-project/qemu/-/issues/542
• https://security.gentoo.org/glsa/202208-27
• https://security.netapp.com/advisory/ntap-20220624-0001/

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