Bug 2568696 (CVE-2026-123608) - CVE-2026-123608 hickory-proto: hickory-proto: Denial of Service via inefficient DNS name compression
Summary: CVE-2026-123608 hickory-proto: hickory-proto: Denial of Service via inefficie...
Keywords:
Status: NEW
Alias: CVE-2026-123608
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-08 01:53 UTC by OSIDB Bzimport
Modified: 2026-11-08 02:17 UTC (History)
15 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-11-08 01:53:03 UTC 
Hickory DNS hickory-proto from 0.3.1 before 0.26.1 contains a denial of service vulnerability in BinEncoder that allows remote attackers to exhaust CPU through quadratic-time name compression. Attackers can send malicious DNS messages with many records that add many candidate labels and trigger repeated linear scans during encoding, amplifying CPU exhaustion.
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