High [CVE-2024-7409] Qemu: denial of service via improper synchronization in qemu nbd server during socket closure

A flaw was found in the QEMU NBD Server. This vulnerability allows a denial of service (DoS) attack via improper synchronization during socket closure when a client keeps a socket open as the server is taken offline.

This issue is classified as Moderate severity rather than Important because it primarily results in a denial of service condition rather than a more crucial impact such as data corruption, unauthorized access, or system compromise.

However, this scenario is mitigated by the fact that it requires a particular sequence of events involving client connection handling and server shutdown. Additionally, proper network segmentation and the use of secure client connections can further reduce the likelihood of this issue being exploited.

Red Hat severity: Moderate — CVSS 7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-662.

Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.2 Extended Update Support; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat OpenShift Container Platform 4.13; Red Hat OpenShift Container Platform 4.14; Red Hat OpenShift Container Platform 4.15; Red Hat OpenShift Container Platform 4.16; Red Hat OpenShift Container Platform 4.17; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8 Advanced Virtualization.