Bug 2491588 (CVE-2026-12245) - CVE-2026-12245 NSD: Denial of DNS over TLS service by any DoT client
Summary: CVE-2026-12245 NSD: Denial of DNS over TLS service by any DoT client
Keywords:
Status: NEW
Alias: CVE-2026-12245
Deadline: 2026-06-25
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: 2494185 2494187
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-22 23:41 UTC by OSIDB Bzimport
Modified: 2026-06-29 13:49 UTC (History)
1 user (show)

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

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Description OSIDB Bzimport 2026-06-22 23:41:24 UTC 
If NSD is configured with DNS over TLS, a client that performs a TLS action, closing the connection early, causes a crash and restart of the server process. An attacker can keep all children in a crash-restart loop denying DoT service.
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