Bug 2568732 (CVE-2026-123607) - CVE-2026-123607 hickory-proto: hickory-net: Hickory DNS: Denial of Service via unbounded loop during DNSSEC validation
Summary: CVE-2026-123607 hickory-proto: hickory-net: Hickory DNS: Denial of Service vi...
Keywords:
Status: NEW
Alias: CVE-2026-123607
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 02:01 UTC by OSIDB Bzimport
Modified: 2026-11-08 02:50 UTC (History)
15 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-11-08 02:01:56 UTC 
Hickory DNS hickory-proto 0.25.0-alpha.3 through 0.25.2 and hickory-net before 0.26.1 contain an unbounded loop vulnerability in DnssecDnsHandle NSEC3 closest-encloser proof validation when the SOA owner is not an ancestor of the QNAME. Upstream attackers can return NoData or NXDomain responses with a cross-zone SOA record to panic debug builds or exhaust memory in release builds.
Note You need to log in before you can comment on or make changes to this bug.