What’s Vulnerable › Vulnerabilities

CVE-2024-3446: Qemu: virtio: dma reentrancy issue leads to double free vulnerability

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-04-09 · updated 2026-06-17
• Weakness: CWE-415

Description

A double free vulnerability was found in QEMU virtio devices (virtio-gpu, virtio-serial-bus, virtio-crypto), where the mem_reentrancy_guard flag insufficiently protects against DMA reentrancy issues. This issue could allow a malicious privileged guest user to crash the QEMU process on the host, resulting in a denial of service or allow arbitrary code execution within the context of the QEMU process on the host.

Affected products

• Red Hat Enterprise Linux 8: all versions — fixed in 8100020240905091210.489197e6
• Red Hat Enterprise Linux 8 Advanced Virtualization: all versions
• Red Hat Enterprise Linux 9: all versions

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 8 8100020240905091210.489197e6. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2024:6964
• https://access.redhat.com/security/cve/CVE-2024-3446
• https://bugzilla.redhat.com/show_bug.cgi?id=2274211
• https://patchew.org/QEMU/20240409105537.18308-1-philmd@linaro.org/
• https://access.redhat.com/security/cve/CVE-2024-3446
• https://bugzilla.redhat.com/show_bug.cgi?id=2274211
• https://patchew.org/QEMU/20240409105537.18308-1-philmd@linaro.org/
• https://security.netapp.com/advisory/ntap-20250502-0007/

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