Bug 2568717 (CVE-2026-123576) - CVE-2026-123576 hickory-dns: hickory-dns: Denial of Service via incomplete DNS-over-QUIC requests
Summary: CVE-2026-123576 hickory-dns: hickory-dns: Denial of Service via incomplete DN...
Keywords:
Status: NEW
Alias: CVE-2026-123576
Product: Security Response
Classification: Other
Component: vulnerability-draft
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 02:31 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-11-08 02:01:55 UTC 
Hickory DNS 0.24.0 through 0.26.1 contains a memory exhaustion vulnerability that allows remote attackers to consume server resources by sending incomplete DNS-over-QUIC request bodies. Attackers can open many connections and send only large length prefixes, causing pre-allocated buffers to persist without timeout and exhausting server memory.
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