CVE-2019-12067 Null dereference in n/a

What is CVE-2019-12067?

CVE-2019-12067 is a medium-severity vulnerability in Debian Debian Linux, published on 2 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The ahci_commit_buf function in ide/ahci.c in QEMU allows attackers to cause a denial of service (NULL dereference) when the command header 'ad->cur_cmd' is null.

Weakness: CWE-476

Which versions are affected by CVE-2019-12067?

It affects 5 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Qemu Qemu, Redhat Enterprise Linux, Redhat Openstack Platform.

How do I fix CVE-2019-12067?

Apply the vendor's patch.

Is CVE-2019-12067 being exploited?

There is no known exploitation of CVE-2019-12067 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• 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-2019-12067, ECHO-9dad-2609-2b54, GHSA-2m2h-fmqp-ffwh, UBUNTU-CVE-2019-12067.