A client can trigger excessive memory allocation by generating a lot of errors responses over a single DoQ and DoH3 connection, as some resources were not properly released until the end of the connection.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · powerdnsNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*