CVE-2024-8612

Host-memory disclosure via oversized virtqueue completions

Published Sep 20, 2024 · Updated Nov 8, 2025

Information disclosure in QEMU virtio devices on Red Hat Enterprise Linux allows guest OS users to read uninitialized host memory. The virtio-scsi, virtio-blk, and virtio-crypto completion paths pass a length to virtqueue_push that can exceed the initialized data, so DMA unmapping writes bounce-buffer remnants into guest memory. Exploitation requires control of a guest using an affected virtio device and exposes host-process data without enabling modification or service interruption.

CVSS severity4.3
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in QEMU virtio devices on Red Hat Enterprise Linux allows guest OS users to read uninitialized host memory. The virtio-scsi, virtio-blk, and virtio-crypto completion paths pass a length to virtqueue_push that can exceed the initialized data, so DMA unmapping writes bounce-buffer remnants into guest memory. Exploitation requires control of a guest using an affected virtio device and exposes host-process data without enabling modification or service interruption.

The record

CVE
CVE-2024-8612
Published
Sep 20, 2024
Updated
Nov 8, 2025
Vendor
Red Hat
Product
Red Hat Enterprise Linux 10
Classifications
CWE-200, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Red Hat · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 8 Advanced VirtualizationAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.

Published CVSS scores

4.3Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo