DEBIAN-CVE-2026-123576

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Source

https://security-tracker.debian.org/tracker/CVE-2026-123576

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123576.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-123576

Upstream

CVE-2026-123576

Published

2026-11-08T02:16:50Z

Modified

2026-11-08T15:00:06Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

[none]

Details

Hickory DNS 0.24.0 through 0.26.1 contains a memory exhaustion vulnerability that allows remote attackers to consume server resources by sending incomplete DNS-over-QUIC request bodies. Attackers can open many connections and send only large length prefixes, causing pre-allocated buffers to persist without timeout and exhausting server memory.

References

https://security-tracker.debian.org/tracker/CVE-2026-123576

Affected packages

Debian:13 / rust-hickory-dns

Package

Name: rust-hickory-dns
Purl: pkg:deb/debian/rust-hickory-dns?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.24.4-1

0.25.2-1

0.25.2-2

0.25.2-3

0.26.1-1

0.26.1-2

0.26.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-123576.json"

Debian:14 / rust-hickory-dns