CVE-2024-3446: Qemu: virtio: dma reentrancy issue leads to double free vulnerability
First published: Tue Apr 09 2024(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU |
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Reference Links
- https://patchew.org/QEMU/20240409105537.18308-1-philmd@linaro.org/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2274212
- https://access.redhat.com/solutions/408653
- https://access.redhat.com/errata/RHSA-2024:6964
- https://access.redhat.com/errata/RHSA-2024:9136
- https://bugzilla.redhat.com/show_bug.cgi?id=2274211
- https://access.redhat.com/security/cve/CVE-2024-3446
- https://security.netapp.com/advisory/ntap-20250502-0007/
Frequently Asked Questions
What is the severity of CVE-2024-3446?
CVE-2024-3446 has been classified as a high-severity vulnerability due to its potential to allow a malicious user to crash the QEMU process.
How do I fix CVE-2024-3446?
To mitigate CVE-2024-3446, it is recommended to update QEMU to the latest version that includes security patches addressing this vulnerability.
Which QEMU versions are affected by CVE-2024-3446?
CVE-2024-3446 affects various versions of QEMU that utilize virtio devices, specifically virtio-gpu, virtio-serial-bus, and virtio-crypto.
What type of vulnerability is CVE-2024-3446?
CVE-2024-3446 is a double free vulnerability that arises from insufficient protection against DMA reentrancy issues within QEMU.
Can CVE-2024-3446 be exploited remotely?
CVE-2024-3446 requires a privileged guest user context for exploitation, meaning it cannot be directly exploited remotely without access to the guest environment.
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