Bug 2460718 (CVE-2026-33254) - CVE-2026-33254 dnsdist: resource exhaustion via DoQ/DoH3 connections
Summary: CVE-2026-33254 dnsdist: resource exhaustion via DoQ/DoH3 connections
Keywords:
Status: NEW
Alias: CVE-2026-33254
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: 2460846 2460847
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-22 15:07 UTC by OSIDB Bzimport
Modified: 2026-04-27 17:00 UTC (History)
0 users

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

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-04-22 15:07:17 UTC 
An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default.
Note You need to log in before you can comment on or make changes to this bug.