Read the docs
TI-2017-06930 Aliases CVE-2017-9524GHSA-3hp7-3fxw-3v9g

The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block…

Priority MEDIUM 40CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 12 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.04093 90th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 12 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*up to 2.9.1VulnerableQEMU
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
  • cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* Versions up to 2.9.1 Vulnerable ·QEMU
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian

Remediation

Red Hat 3 advisories

  • RHSA-2017:2408 Released 2017-08-01 · Red Hat rating Moderate
    qemu-kvm-rhev security and bug fix update
    • Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 qemu-img-rhev-10:2.9.0-10.el7, qemu-kvm-common-rhev-10:2.9.0-10.el7, qemu-kvm-rhev-10:2.9.0-10.el7 +1
    • Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 qemu-img-rhev-10:2.9.0-10.el7, qemu-kvm-common-rhev-10:2.9.0-10.el7, qemu-kvm-rhev-10:2.9.0-10.el7 +1
    • Red Hat OpenStack Platform 10.0 qemu-img-rhev-10:2.9.0-10.el7, qemu-kvm-common-rhev-10:2.9.0-10.el7, qemu-kvm-rhev-10:2.9.0-10.el7 +1
    • Red Hat OpenStack Platform 11.0 qemu-img-rhev-10:2.9.0-10.el7, qemu-kvm-common-rhev-10:2.9.0-10.el7, qemu-kvm-rhev-10:2.9.0-10.el7 +1
    • Red Hat OpenStack Platform 8.0 (Liberty) qemu-img-rhev-10:2.9.0-10.el7, qemu-kvm-common-rhev-10:2.9.0-10.el7, qemu-kvm-rhev-10:2.9.0-10.el7 +1
    • Red Hat OpenStack Platform 9.0 qemu-img-rhev-10:2.9.0-10.el7, qemu-kvm-common-rhev-10:2.9.0-10.el7, qemu-kvm-rhev-10:2.9.0-10.el7 +1
  • RHSA-2017:1681 Released 2017-07-05 · Red Hat rating Important
    qemu-kvm security update
    • Red Hat Enterprise Linux Client (v. 7) qemu-img-10:1.5.3-126.el7_3.10, qemu-kvm-10:1.5.3-126.el7_3.10, qemu-kvm-common-10:1.5.3-126.el7_3.10 +1
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) qemu-img-10:1.5.3-126.el7_3.10, qemu-kvm-10:1.5.3-126.el7_3.10, qemu-kvm-common-10:1.5.3-126.el7_3.10 +1
    • Red Hat Enterprise Linux Server (v. 7) qemu-img-10:1.5.3-126.el7_3.10, qemu-kvm-10:1.5.3-126.el7_3.10, qemu-kvm-common-10:1.5.3-126.el7_3.10 +1
    • Red Hat Enterprise Linux Workstation (v. 7) qemu-img-10:1.5.3-126.el7_3.10, qemu-kvm-10:1.5.3-126.el7_3.10, qemu-kvm-common-10:1.5.3-126.el7_3.10 +1
  • RHSA-2017:1682 Released 2017-07-05 · Red Hat rating Important
    qemu-kvm-rhev security and bug fix update
    • RHEV-H and VDSM for 7 Hosts qemu-img-rhev-10:2.6.0-28.el7_3.12, qemu-kvm-common-rhev-10:2.6.0-28.el7_3.12, qemu-kvm-rhev-10:2.6.0-28.el7_3.12 +1
    • Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts qemu-img-rhev-10:2.6.0-28.el7_3.12, qemu-kvm-common-rhev-10:2.6.0-28.el7_3.12, qemu-kvm-rhev-10:2.6.0-28.el7_3.12 +1

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)AffectedNo fix planned: Will not fix
RHEV-H and VDSM for 7 HostsFixed RHSA-2017:1682
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:1681
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:1681
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7Fixed RHSA-2017:2408
Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7Fixed RHSA-2017:2408
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:1681
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:1681
Red Hat OpenStack Platform 10.0Fixed RHSA-2017:2408
Red Hat OpenStack Platform 11.0Fixed RHSA-2017:2408
Red Hat OpenStack Platform 8.0 (Liberty)Fixed RHSA-2017:2408
Red Hat OpenStack Platform 9.0Fixed RHSA-2017:2408
Red Hat Virtualization 4 Management Agent for RHEL 7 HostsFixed RHSA-2017:1682
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-9524
  2. 2026-10-03 Alias added: GHSA-3hp7-3fxw-3v9g

References

Patch 3

Advisory 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences