Bug 2431923

Summary: CVE-2025-13878 dhcp: bind: Denial of Service via corrupt or malicious record [fedora-42]
Product: [Fedora] Fedora Reporter: Patrick Del Bello <pdelbell>
Component: dhcpAssignee: Martin Osvald 🛹 <mosvald>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: 42CC: fhrdina, jorton, mosvald, pavel, pemensik
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["62cb09ad-f312-4caa-bcbc-36dd1f7747aa"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-01-22 06:26:43 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2431600    

Description Patrick Del Bello 2026-01-22 03:01:14 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Comment 1 Martin Osvald 🛹 2026-01-22 06:26:43 UTC 
When looking at the commit fixing this vulnerability:

https://gitlab.isc.org/isc-projects/bind9/-/commit/14e299995f8f1dd8faeb7c5395a5a0c12b0f43f4

ISC DHCP is not affected. It doesn't execute code path related to DNS resource records serving/parsing for BRID/HHIT inside HIP RDATA (towire_*() methods). This is a BIND server-side issue, as also mentioned by the documentation for the CVE-2025-13878:

https://kb.isc.org/docs/cve-2025-13878

ISC DHCP uses portions of the ISC BIND libraries (primarily libdns, omapi, and libisccfg) only to support DDNS (TSIG support, DNS message construction/parsing, DHCID generation), OMAPI related operations, basic functions (configuration handling, data structures, logging, networking primitives).