Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be written to the controller's registers and trigger undesirable actions (such as reset) while the device is still transferring packets. This can ultimately lead to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code within the context of the QEMU process on the host. This flaw affects QEMU versions before 7.0.0.
CVSS Information
N/A
Vulnerability Type
释放后使用
Vulnerability Title
QEMU 资源管理错误漏洞
Vulnerability Description
QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。 QEMU 7.0.0 版本之前存在资源管理错误漏洞，该漏洞源于 EHCI 在传输 USB 数据包时不会验证缓冲区指针是否与其 MMIO 区域重叠。
CVSS Information
N/A
Vulnerability Type
N/A