CVE-2021-3608: Debian Linux

Medium severity, CVSS 6.0. EPSS: 0.4% chance of exploitation in the next 30 days.

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.

Affected products

• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 34 only
• Qemu Qemu: before 6.1.0 (fixed in 6.1.0)

Published 2022-02-24. Last modified 2026-06-17.