USN-8972-2

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Source

https://ubuntu.com/security/notices/USN-8972-2

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8972-2.json

JSON Data

https://api.osv.dev/v1/vulns/USN-8972-2

Published

2026-11-05T12:52:52Z

Modified

2026-11-06T01:00:34Z

Summary

haproxy regression

Details

USN-8972-1 fixed vulnerabilities in HAProxy. On Ubuntu 22.04 LTS, the update caused a regression when processing certain chunked requests. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that HAProxy incorrectly handled truncated HTTP/2 PING frames. A remote attacker could possibly use this issue to cause HAProxy to consume excessive CPU resources, leading to a denial of service. (CVE-2026-110353)

It was discovered that HAProxy incorrectly handled certain HTTP/1.1 chunked requests. A remote attacker could possibly use this issue to cause HAProxy to consume excessive CPU resources, leading to a denial of service. (CVE-2026-110354)

References

Affected packages

Ubuntu:22.04:LTS / haproxy

Package

Name: haproxy
Purl: pkg:deb/ubuntu/haproxy?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

2.4.30-0ubuntu0.22.04.4

Affected versions

2.*

2.2.9-2ubuntu2

2.4.8-1

2.4.8-2ubuntu3

2.4.11-1ubuntu1

2.4.12-1ubuntu1

2.4.12-1ubuntu2

2.4.13-1ubuntu1

2.4.14-1ubuntu1

2.4.18-0ubuntu1

2.4.18-0ubuntu1.1

2.4.18-0ubuntu1.2

2.4.18-0ubuntu1.3

2.4.22-0ubuntu0.22.04.1

2.4.22-0ubuntu0.22.04.2

2.4.22-0ubuntu0.22.04.3

2.4.24-0ubuntu0.22.04.1

2.4.24-0ubuntu0.22.04.2

2.4.24-0ubuntu0.22.04.3

2.4.29-0ubuntu0.22.04.1

2.4.30-0ubuntu0.22.04.1

2.4.30-0ubuntu0.22.04.2

2.4.30-0ubuntu0.22.04.3

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "haproxy",
            "binary_version": "2.4.30-0ubuntu0.22.04.4"
        },
        {
            "binary_name": "vim-haproxy",
            "binary_version": "2.4.30-0ubuntu0.22.04.4"
        }
    ]
}

Database specific

cves_map

{
    "cves": [],
    "ecosystem": "Ubuntu:22.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8972-2.json"