CVE-2021-3607

An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

The versions of qemu-kvm as shipped with Red Hat Enterprise Linux and RHEL Advanced Virtualization are not affected by this flaw, as they are not built with PVRDMA support.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.