CVE-2021-3607 Integer overflow in QEMU

What is CVE-2021-3607?

CVE-2021-3607 is a medium-severity vulnerability in Debian Debian Linux, published on 24 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An integer overflow 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 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.

Weakness: CWE-190

Which versions are affected by CVE-2021-3607?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Qemu Qemu.

How do I fix CVE-2021-3607?

Upgrade to a fixed version.

Is CVE-2021-3607 being exploited?

There is no known exploitation of CVE-2021-3607 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2021-3607, GHSA-3h3j-q234-gp6p, UBUNTU-CVE-2021-3607.