CVE-2022-4144: Fedoraproject Extra Packages For Enterprise Linux

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.

Affected products

• Fedoraproject Extra Packages For Enterprise Linux: version 8.0 only
• Fedoraproject Fedora: version 37 only
• Qemu Qemu: up to and including 7.1.0
• Red Hat Enterprise Linux: version 8.0 only

Published 2022-11-29. Last modified 2026-06-17.