CVE-2020-35504 Null dereference in QEMU

What is CVE-2020-35504?

CVE-2020-35504 is a medium-severity vulnerability in Debian Debian Linux, published on 28 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU in versions before 6.0.0. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Weakness: CWE-476

Which versions are affected by CVE-2020-35504?

It affects 3 products.

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

How do I fix CVE-2020-35504?

Upgrade to a fixed version.

Is CVE-2020-35504 being exploited?

There is no known exploitation of CVE-2020-35504 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-2020-35504, GHSA-9hxx-56x6-jhj8, UBUNTU-CVE-2020-35504.