Bug 2481341 - CVE-2026-3593 dhcp: Heap use-after-free vulnerability in BIND 9 DNS-over-HTTPS implementation [fedora-all]
Summary: CVE-2026-3593 dhcp: Heap use-after-free vulnerability in BIND 9 DNS-over-HTTP...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: dhcp
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Martin Osvald 🛹
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["6a19b16a-496f-4950-9353-2...
Depends On:
Blocks: CVE-2026-3593
TreeView+ depends on / blocked
 
Reported: 2026-05-26 03:46 UTC by Sandipan Roy
Modified: 2026-05-28 05:50 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-05-28 05:50:34 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Sandipan Roy 2026-05-26 03:46:32 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 🛹 2026-05-28 05:50:34 UTC 
ISC DHCP is not affected. It doesn't perform DNS-over-HTTPS. This is a BIND server-side issue.

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).
Note You need to log in before you can comment on or make changes to this bug.