Qemu: virtio: dma reentrancy issue leads to double free vulnerability

8.2 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Red Hat would like to thank Xiao Lei, Yiming Tao, and Yongkang Jia for reporting this issue.

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Affected Vendor

Red Hat

View all reports →

Affected Software

Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8 Advanced Virtualization, Red Hat Enterprise Linux 9

Vulnerable Versions:

8100020240905091210.489197e6