Metrics
Affected Vendors & Products
No advisories yet.
Solution
This issue is fixed starting with version 1.25.2
Workaround
No workaround given by the vendor.
Mon, 27 Jul 2026 20:30:00 +0000
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| First Time appeared |
Nlnetlabs
Nlnetlabs unbound |
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| Vendors & Products |
Nlnetlabs
Nlnetlabs unbound |
Wed, 22 Jul 2026 15:30:00 +0000
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| Metrics |
ssvc
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Wed, 22 Jul 2026 13:30:00 +0000
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| Description | With NLnet Labs Unbound up to and including version 1.25.1, applications using libunbound and configured with 'unwanted-reply-threshold', could eventually be abruptly terminated if the threshold is reached and libunbound needs to call 'libworker_alloc_cleanup' since the function is absent from the function call allow list. When an application using libunbound sets 'unwanted-reply-threshold' to any non-zero value and the iterator queries an authoritative that replies with enough wrong-transaction-ID UDP datagrams to cross the threshold, the 'libworker_alloc_cleanup' will eventually be called. Since the function is absent from the function call allow list, this leads to a fatal exit of libunbound and eventual termination of the embedding application.Unbound itself is not affected since its relevant function 'worker_alloc_cleanup' is registed in the allow list and proceeds to perform the documented cache flush. | |
| Title | Libunbound applications configured with 'unwanted-reply-threshold' could eventually be abruptly terminated | |
| Weaknesses | CWE-754 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: NLnet Labs
Published:
Updated: 2026-07-22T14:21:22.388Z
Reserved: 2026-06-22T10:11:10.524Z
Link: CVE-2026-44621
Updated: 2026-07-22T14:21:18.572Z
Status : Analyzed
Published: 2026-07-22T14:17:18.913
Modified: 2026-07-24T13:56:30.607
Link: CVE-2026-44621
No data.
OpenCVE Enrichment
Updated: 2026-08-04T00:00:09Z