Bug 2568807 (CVE-2026-123574) - CVE-2026-123574 hickory-proto: hickory-proto: Denial of Service via oversized token in zone file parser
Summary: CVE-2026-123574 hickory-proto: hickory-proto: Denial of Service via oversized...
Keywords:
Status: NEW
Alias: CVE-2026-123574
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-08 02:06 UTC by OSIDB Bzimport
Modified: 2026-11-08 02:06 UTC (History)
15 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-11-08 02:06:17 UTC 
The zone file parser in the hickory-proto crate of Hickory DNS 0.24.0 before 0.26.2 panics when a single token in a zone file is 4096 bytes or longer. Attackers who can supply untrusted zone files to an application using the parser can trigger the panic to cause a denial of service.
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