CVE-2024-7409
Publication date 5 August 2024
Last updated 9 June 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| qemu | 26.04 LTS resolute |
Fixed 1:9.0.2+ds-4ubuntu2
|
| 25.10 questing |
Fixed 1:9.0.2+ds-4ubuntu2
|
|
| 24.04 LTS noble |
Fixed 1:8.2.2+ds-0ubuntu1.10
|
|
| 22.04 LTS jammy |
Fixed 1:6.2+dfsg-2ubuntu6.27
|
|
| 20.04 LTS focal |
Fixed 1:4.2-3ubuntu6.30+esm1
|
|
| 18.04 LTS bionic |
Fixed 1:2.11+dfsg-1ubuntu7.42+esm5
|
|
| 16.04 LTS xenial |
Fixed 1:2.5+dfsg-5ubuntu10.51+esm4
|
|
| 14.04 LTS trusty |
Fixed 2.0.0+dfsg-2ubuntu1.47+esm6
|
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mdeslaur
The changes required to fix this issue in Ubuntu 20.04 LTS and earlier are intrusive and uncovered a regression during QA. For Ubuntu 22.04 LTS and Ubuntu 24.04 LTS, the fix for this issue introduces a backwards-incompatible change and may require changes to libvirt to support passing the max-connections parameter.
Patch details
| Package | Patch details |
|---|---|
| qemu |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-7744-1
- QEMU vulnerabilities
- 11 September 2025
- USN-8412-1
- QEMU vulnerabilities
- 9 June 2026