CVE-2020-27617 Denial of service in n/a

What is CVE-2020-27617?

CVE-2020-27617 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 6 Nov 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows guest OS users to trigger an assertion failure. A guest can crash the QEMU process via packet data that lacks a valid Layer 3 protocol.

Weakness: CWE-617

Which versions are affected by CVE-2020-27617?

It affects 2 products.

Products include Debian Debian Linux, Qemu Qemu.

How do I fix CVE-2020-27617?

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-2020-27617 being exploited?

There is no known exploitation of CVE-2020-27617 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

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• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• 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-2020-27617, GHSA-rxvx-vx9w-jw3j, UBUNTU-CVE-2020-27617.