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CVE-2024-4693— Qemu-kvm: virtio-pci: improper release of configure vector leads to guest triggerable crash

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 6
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 8.2.3 版本和 9.0.0 版本存在安全漏洞，该漏洞源于在 Virtio PCI 绑定 (hw/virtio/virtio-pci.c) 中的 QEMU 中发现了一个缺陷。在启动过程中对向量 0 的 irqfd 的不正确释放和使用会导致通过 vhost_net_stop 函数触发客户机崩溃。

CVSS 5.5 · Medium EPSS 0.32% · P25
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I. Basic Information for CVE-2024-4693

Vulnerability Information
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Vulnerability Title
Qemu-kvm: virtio-pci: improper release of configure vector leads to guest triggerable crash
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the QEMU Virtio PCI Bindings (hw/virtio/virtio-pci.c). An improper release and use of the irqfd for vector 0 during the boot process leads to a guest triggerable crash via vhost_net_stop(). This flaw allows a malicious guest to crash the QEMU process on the host.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在过期或释放后对资源进行操作
Source: CVE Program / CVE List V5
Vulnerability Title
QEMU 安全漏洞
Source: CNNVD (China National Vulnerability Database)
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 8.2.3 版本和 9.0.0 版本存在安全漏洞，该漏洞源于在 Virtio PCI 绑定 (hw/virtio/virtio-pci.c) 中的 QEMU 中发现了一个缺陷。在启动过程中对向量 0 的 irqfd 的不正确释放和使用会导致通过 vhost_net_stop 函数触发客户机崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization - cpe:/a:redhat:advanced_virtualization:8::el8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2024-4693

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III. Intelligence Information for CVE-2024-4693

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Vendor Advisories for CVE-2024-4693 (2)

IV. Related Vulnerabilities

Same weakness: CWE-672