Bug 2362880 (CVE-2025-30194) - CVE-2025-30194 dnsdist: Denial of service via crafted DoH exchange
Summary: CVE-2025-30194 dnsdist: Denial of service via crafted DoH exchange
Keywords:
Status: NEW
Alias: CVE-2025-30194
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: 2362922 2362923 2362924
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-04-29 12:01 UTC by OSIDB Bzimport
Modified: 2025-04-30 11:16 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2025-04-29 12:01:01 UTC 
When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.

The remedy is: upgrade to the patched 1.9.9 version.

A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.

We would like to thank Charles Howes for bringing this issue to our attention.
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