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

Description

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.

Timeline

Scores

EPSS (exploitation in 30 days)

1.0% · top 36% of all CVEs (11 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Affected products

• qemu

  • unaffected 7.2.0
  • unaffected 8.2.0
  • unaffected 9.0.0

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 8100020240905091210.489197e6 – < *

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 8100020240905091210.489197e6 – < *

• Red Hat · Red Hat Enterprise Linux 9

  • unaffected 17:9.0.0-10.el9_5 – < *

• Red Hat · Red Hat Enterprise Linux 9.2 Extended Update Support

  • unaffected 17:7.2.0-14.el9_2.14 – < *

• Red Hat · Red Hat Enterprise Linux 9.4 Extended Update Support

  • unaffected 17:8.2.0-11.el9_4.8 – < *

• Red Hat · Red Hat OpenShift Container Platform 4.13

  • unaffected 413.92.202411212100-0 – < *

• Red Hat · Red Hat OpenShift Container Platform 4.13

  • unaffected 413.92.202409180051-0 – < *

• Red Hat · Red Hat OpenShift Container Platform 4.14

  • unaffected 414.92.202411130444-0 – < *

• Red Hat · Red Hat OpenShift Container Platform 4.15

  • unaffected 415.92.202409162258-0 – < *

• Red Hat · Red Hat OpenShift Container Platform 4.15

  • unaffected 415.92.202411050056-0 – < *

• Red Hat · Red Hat OpenShift Container Platform 4.16

  • unaffected 416.94.202411261619-0 – < *

• Red Hat · Red Hat OpenShift Container Platform 4.17

  • unaffected 417.94.202411261220-0 – < *

• Red Hat · Red Hat Enterprise Linux 10

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 6

  All versions: unknown

• Red Hat · Red Hat Enterprise Linux 7

  All versions: unknown

• Red Hat · Red Hat Enterprise Linux 7

  All versions: unknown

• Red Hat · Red Hat Enterprise Linux 8 Advanced Virtualization

  All versions: affected

• Red Hat · Red Hat Enterprise Linux 8 Advanced Virtualization

  All versions: affected

• Red Hat · Red Hat Enterprise Linux 8 Advanced Virtualization

  All versions: affected

• Red Hat · Red Hat Enterprise Linux 8 Advanced Virtualization

  All versions: affected

• Red Hat · Red Hat OpenShift Container Platform 4

  All versions: affected

What to do

Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2024-48876 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2024-7409](https://cveledger.app/badge/CVE-2024-7409.svg)](https://cveledger.app/cve/CVE-2024-7409)

Record last updated 5 Nov 2026, 14:43 UTC.