CVE-2017-12809 Null dereference in n/a

What is CVE-2017-12809?

CVE-2017-12809 is a medium-severity vulnerability in Debian Debian Linux, published on 23 Aug 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

QEMU (aka Quick Emulator), when built with the IDE disk and CD/DVD-ROM Emulator support, allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by flushing an empty CDROM device drive.

Weakness: CWE-476

Which versions are affected by CVE-2017-12809?

It affects 2 products.

Products include Debian Debian Linux, Qemu Qemu.

How do I fix CVE-2017-12809?

Apply the vendor's patch.

Is CVE-2017-12809 being exploited?

There is no known exploitation of CVE-2017-12809 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-2017-12809, GHSA-2m2j-2qxm-fr56, UBUNTU-CVE-2017-12809.