Bug 2487437 (CVE-2026-10846) - CVE-2026-10846 ldns: ldns: Off-path poisoning attacks due to insufficient query-response matching
Summary: CVE-2026-10846 ldns: ldns: Off-path poisoning attacks due to insufficient que...
Keywords:
Status: NEW
Alias: CVE-2026-10846
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: 2500365 2500376 2500378 2500383 2500367 2500381
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-10 07:01 UTC by OSIDB Bzimport
Modified: 2026-07-18 08:29 UTC (History)
9 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-10 07:01:26 UTC 
NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as (stub) resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the query ID, neither the question of the query is matched with that of the response. This makes applications, that use ldns for (stub) resolver functionality over UDP, vulnerable for off-path poisoning attacks. The drill tool, which is shipped with ldns, suffers from this vulnerability.
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