CVE-2017-9524: Debian Linux

High severity, CVSS 7.5. EPSS: 4.1% chance of exploitation in the next 30 days.

The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block Device (NBD) Server support, allows remote attackers to cause a denial of service (segmentation fault and server crash) by leveraging failure to ensure that all initialization occurs before talking to a client in the nbd_negotiate function.

Affected products

  • Debian Debian Linux: version 9.0 only
  • Qemu Qemu: up to and including 2.9.1

Published 2017-07-06. Last modified 2026-06-17.