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Fencer Vulns
high 7.5

CVE-2024-7409 json

Qemu: denial of service via improper synchronization in qemu nbd server during socket closure

published 2024-08-05 2 y ago modified 2026-11-05 3 d ago also EUVD-2024-48876

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 8 8100020240905091210.489197e6
  • Red Hat Red Hat Enterprise Linux 9 17:9.0.0-10.el9_5
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 17:7.2.0-14.el9_2.14
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 17:8.2.0-11.el9_4.8
  • Red Hat Red Hat OpenShift Container Platform 4.13 413.92.202409180051-0, 413.92.202411212100-0
  • Red Hat Red Hat OpenShift Container Platform 4.14 414.92.202411130444-0
  • Red Hat Red Hat OpenShift Container Platform 4.15 415.92.202409162258-0, 415.92.202411050056-0
  • Red Hat Red Hat OpenShift Container Platform 4.16 416.94.202411261619-0
  • Red Hat Red Hat OpenShift Container Platform 4.17 417.94.202411261220-0
  • qemu Debian 12 1:7.2+dfsg-7+deb12u8
  • qemu Debian 14, Debian 13 1:9.0.2+ds-3

debian advisories DEBIAN-CVE-2024-7409

  • qemu Ubuntu 22.04 LTS 1:6.2+dfsg-2ubuntu6.27
  • qemu Ubuntu 24.04 LTS 1:8.2.2+ds-0ubuntu1.10
  • qemu Ubuntu Pro 14.04 LTS 2.0.0+dfsg-2ubuntu1.47+esm6
  • qemu Ubuntu Pro 16.04 LTS 1:2.5+dfsg-5ubuntu10.51+esm4
  • qemu Ubuntu Pro 18.04 LTS 1:2.11+dfsg-1ubuntu7.42+esm6
  • qemu Ubuntu Pro 20.04 LTS 1:4.2-3ubuntu6.30+esm2

ubuntu advisories UBUNTU-CVE-2024-7409

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • qemu-kvm RHEL 9 17:9.0.0-10.el9_5
  • qemu-img RHEL 9 17:9.0.0-10.el9_5
  • qemu-kvm-core RHEL 9 17:9.0.0-10.el9_5
  • qemu-kvm-tools RHEL 9 17:9.0.0-10.el9_5
  • qemu-pr-helper RHEL 9 17:9.0.0-10.el9_5
  • qemu-kvm-common RHEL 9 17:9.0.0-10.el9_5
  • qemu-guest-agent RHEL 9 17:9.0.0-10.el9_5
  • qemu-kvm-audio-pa RHEL 9 17:9.0.0-10.el9_5

red hat advisories RHSA-2024:9912RHSA-2024:9136RHSA-2024:7408RHSA-2024:6964

  • qemu SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +3 more 5.2.0-150300.135.1
  • qemu Linux Micro 6.0 8.2.7-1.1
  • qemu Linux Micro 6.0 8.2.6-1.1
  • qemu SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +5 more 6.2.0-150400.37.37.3
  • qemu SLE Module for Server Applications 15 SP6, SLE Module for Package Hub 15 SP6, SLE Module for Basesystem 15 SP6 +1 more 8.2.7-150600.3.20.1
  • qemu-linux-user SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 8.2.7-150600.3.20.1
  • qemu SLE Module for Server Applications 15 SP5, SLE Module for Package Hub 15 SP5, SLE Module for Basesystem 15 SP5 +3 more 7.1.0-150500.49.24.1
  • qemu SLE Module for Confidential Computing Technical Preview 15 SP6 8.2.7-15061.6.coco15sp6.1

suse advisories SUSE-SU-2025:02530-1SUSE-SU-2025:0692-1SUSE-SU-2025:20076-1SUSE-SU-2025:20036-1SUSE-SU-2024:4304-1SUSE-SU-2024:4094-1

  • qemu openSUSE Tumbleweed 9.1.0-2.1

opensuse advisories openSUSE-SU-2024:14411-1

  • qemu-kvm AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-img AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-kvm-core AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-kvm-tools AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-pr-helper AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-kvm-common AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-guest-agent AlmaLinux 9 17:9.0.0-10.el9_5
  • qemu-kvm-audio-pa AlmaLinux 9 17:9.0.0-10.el9_5

almalinux advisories ALSA-2024:9136ALSA-2024:6964

  • hivex Rocky Linux 8 1.3.18-23.module+el8.10.0+1590+a67ab969
  • hivex Rocky Linux 8 1.3.18-23.module+el8.10.0+1835+43f01cbb
  • netcf Rocky Linux 8 0.2.8-12.module+el8.10.0+1590+a67ab969
  • netcf Rocky Linux 8 0.2.8-12.module+el8.10.0+1835+43f01cbb
  • swtpm Rocky Linux 8 0.7.0-4.20211109gitb79fd91.module+el8.10.0+1590+a67ab969
  • swtpm Rocky Linux 8 0.7.0-4.20211109gitb79fd91.module+el8.10.0+1835+43f01cbb
  • libnbd Rocky Linux 8 1.6.0-6.module+el8.10.0+1870+0a714c9f
  • nbdkit Rocky Linux 8 1.24.0-5.module+el8.10.0+1590+a67ab969

rocky linux advisories RLSA-2024:6964RLSA-2024:9136

  • qemu CBL-Mariner 2.0 6.2.0-26
  • qemu Azure Linux 3.0 8.2.0-19

azure linux advisories AZL-60094AZL-60916

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-7409 updated cvss 7.5

QEMU: Denial of Service via Improper Synchronization in QEMU NBD Server During Socket Closure

  • Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32 Red Hat Enterprise Linux 7 qemu-img, qemu-kvm, libcacard, qemu-img-ma, qemu-kvm-ma, qemu-kvm-tools, +5 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 Advanced Virtualization qemu-img, qemu-kvm, qemu-kiwi, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, +9 more Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) netcf 0.2.8-12.module+el8.9.0+18724+20190c23, hivex 1.3.18-23.module+el8.9.0+18724+20190c23, libnbd 1.6.0-6.module+el8.10.0+22250+3c790083, nbdkit 1.24.0-5.module+el8.9.0+18724+20190c23, nbdfuse 1.6.0-6.module+el8.10.0+22250+3c790083, seabios 1.16.0-4.module+el8.9.0+19570+14a90618, +104 more
    fixed: vendor fix RHSA-2024:6964
  • Red Hat Enterprise Linux AppStream (v. 9) qemu-img 9.0.0-10.el9_5, qemu-kvm 9.0.0-10.el9_5, qemu-kvm-core 9.0.0-10.el9_5, qemu-kvm-tools 9.0.0-10.el9_5, qemu-pr-helper 9.0.0-10.el9_5, qemu-kvm-common 9.0.0-10.el9_5, +13 more
    fixed: vendor fix RHSA-2024:9136
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) qemu-img 7.2.0-14.el9_2.14, qemu-kvm 7.2.0-14.el9_2.14, qemu-kvm-core 7.2.0-14.el9_2.14, qemu-kvm-tools 7.2.0-14.el9_2.14, qemu-pr-helper 7.2.0-14.el9_2.14, qemu-kvm-common 7.2.0-14.el9_2.14, +12 more
    fixed: vendor fix RHSA-2024:7408
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) qemu-img 8.2.0-11.el9_4.8, qemu-kvm 8.2.0-11.el9_4.8, qemu-kvm-core 8.2.0-11.el9_4.8, qemu-kvm-tools 8.2.0-11.el9_4.8, qemu-pr-helper 8.2.0-11.el9_4.8, qemu-kvm-common 8.2.0-11.el9_4.8, +13 more
    fixed: vendor fix RHSA-2024:9912
  • Red Hat Enterprise Linux CRB (v. 8) netcf 0.2.8-12.module+el8.9.0+18724+20190c23, hivex 1.3.18-23.module+el8.9.0+18724+20190c23, libnbd 1.6.0-6.module+el8.10.0+22250+3c790083, nbdfuse 1.6.0-6.module+el8.10.0+22250+3c790083, seabios 1.16.0-4.module+el8.9.0+19570+14a90618, SLOF 20210217-2.module+el8.10.0+20141+6faa2812, +38 more
    fixed: vendor fix RHSA-2024:6964
  • Red Hat OpenShift Container Platform 4.13 rhcos 413.92.202409180051-0, rhcos 413.92.202411212100-0
    fixed: vendor fix RHSA-2024:6811
show 5 more
  • Red Hat OpenShift Container Platform 4.14 rhcos 414.92.202411130444-0
    fixed: vendor fix RHSA-2024:9620
  • Red Hat OpenShift Container Platform 4.15 rhcos 415.92.202409162258-0, rhcos 415.92.202411050056-0
    fixed: vendor fix RHSA-2024:6818
  • Red Hat OpenShift Container Platform 4.16 rhcos 416.94.202411261619-0
    fixed: vendor fix RHSA-2024:10528
  • Red Hat OpenShift Container Platform 4.17 rhcos 417.94.202411261220-0
    fixed: vendor fix RHSA-2024:10518
  • Red Hat Enterprise Linux 10 qemu-kvm Red Hat OpenShift Container Platform 4.13 openshift4/ose-cli v4.13.0-202411300029.p0.gd192e90.assembly.stream.el8, openshift4/ose-pod v4.13.0-202409171607.p0.g53fd427.assembly.stream.el8, openshift4/ose-pod v4.13.0-202411300029.p0.g53fd427.assembly.stream.el8, openshift4/ose-tests v4.13.0-202409161306.p0.g19f8094.assembly.stream.el8, openshift4/ose-tests v4.13.0-202411300029.p0.g19f8094.assembly.stream.el8, openshift4/ose-console v4.13.0-202409121037.p0.g1584fb1.assembly.stream.el8, +217 more Red Hat OpenShift Container Platform 4.14 openshift4/ose-cli v4.14.0-202411130434.p0.g44b3ac2.assembly.stream.el8, openshift4/ose-pod v4.14.0-202411130434.p0.g03a907c.assembly.stream.el8, openshift4/ose-tests v4.14.0-202411130434.p0.g2c640ec.assembly.stream.el8, openshift4/ose-console v4.14.0-202411131205.p0.g839a801.assembly.stream.el8, openshift4/ose-coredns v4.14.0-202411130434.p0.gfdd6037.assembly.stream.el8, openshift4/ose-deployer v4.14.0-202411130434.p0.g44b3ac2.assembly.stream.el8, +188 more Red Hat OpenShift Container Platform 4.15 openshift4/ose-cli v4.15.0-202411060036.p0.g8231637.assembly.stream.el8, openshift4/ose-tests v4.15.0-202409180705.p0.g95ee44e.assembly.stream.el8, openshift4/ose-tests v4.15.0-202411060036.p0.g7db90dc.assembly.stream.el8, openshift4/ose-console v4.15.0-202409180905.p0.gf6f61ca.assembly.stream.el8, openshift4/ose-console v4.15.0-202411060036.p0.gd8360d4.assembly.stream.el8, openshift4/ose-deployer v4.15.0-202411060036.p0.g8231637.assembly.stream.el8, +215 more Red Hat OpenShift Container Platform 4.16 openshift4/ose-cli-rhel9 v4.16.0-202411251535.p0.gcf533b5.assembly.stream.el9, openshift4/ose-pod-rhel9 v4.16.0-202411251535.p0.g67d3387.assembly.stream.el9, openshift4/ose-sdn-rhel9 v4.16.0-202411251535.p0.gc4dd04f.assembly.stream.el9, openshift4/ose-etcd-rhel9 v4.16.0-202411251535.p0.g16202ec.assembly.stream.el9, openshift4/ose-tests-rhel9 v4.16.0-202411251535.p0.gc740dbd.assembly.stream.el9, openshift4/ose-tools-rhel9 v4.16.0-202411251535.p0.gcf533b5.assembly.stream.el9, +185 more Red Hat OpenShift Container Platform 4.17 openshift4/frr-rhel9 v4.17.0-202411251634.p0.g377d02f.assembly.stream.el9, openshift4/ose-cli-rhel9 v4.17.0-202411251634.p0.g8b0472f.assembly.stream.el9, openshift4/ose-pod-rhel9 v4.17.0-202411251634.p0.g5a24e85.assembly.stream.el9, openshift4/ose-etcd-rhel9 v4.17.0-202411251634.p0.gc82057d.assembly.stream.el9, openshift4/ose-tests-rhel9 v4.17.0-202411251634.p0.g38cdcea.assembly.stream.el9, openshift4/ose-tools-rhel9 v4.17.0-202411251634.p0.g8b0472f.assembly.stream.el9, +183 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.03% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support
  • Red Hat Red Hat OpenShift Container Platform 4.13
  • Red Hat Red Hat OpenShift Container Platform 4.14
  • Red Hat Red Hat OpenShift Container Platform 4.15
  • Red Hat Red Hat OpenShift Container Platform 4.16
  • Red Hat Red Hat OpenShift Container Platform 4.17
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization
  • Red Hat Red Hat OpenShift Container Platform 4

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.