CVE-2016-7909 Denial of service in n/a

What is CVE-2016-7909?

CVE-2016-7909 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 5 Oct 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The pcnet_rdra_addr function in hw/net/pcnet.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0.

Weakness: CWE-835

Which versions are affected by CVE-2016-7909?

It affects 2 products.

Products include Debian Debian Linux, Qemu Qemu.

How do I fix CVE-2016-7909?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2016-7909 being exploited?

There is no known exploitation of CVE-2016-7909 in the wild and no public exploit code.

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• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2016-7909, GHSA-f98x-7m57-3xg7, UBUNTU-CVE-2016-7909.