UBUNTU-CVE-2026-123589

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Source

https://ubuntu.com/security/CVE-2026-123589

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-123589.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-123589

Upstream

CVE-2026-123589

Published

2026-11-09T00:00:00Z

Modified

2026-11-10T02:50:13Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

The DNS-over-QUIC (DoQ) server in hickory-server (hickory-dns) before 0.26.2 does not apply any timeout when reading a request message from a QUIC stream, bypassing all configured timeouts. A remote unauthenticated client can open a connection and a request stream and hold it open indefinitely, consuming server resources and causing a denial of service.

References

Affected packages

Ubuntu:26.10 / rust-hickory-server

Package

Name: rust-hickory-server
Purl: pkg:deb/ubuntu/rust-hickory-server?arch=source&distro=stonking

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.24.4-2

0.26.1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "librust-hickory-server-dev",
            "binary_version": "0.26.1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-123589.json"

Ubuntu:26.04:LTS / rust-hickory-server