[SECURITY] [DSA 6369-1] pdns-recursor security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6369-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff June 25, 2026 https://www.debian.org/security/faq -...

CVE-2026-52690

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail...

CVE-2026-42387

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation...

CVE-2026-52690

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail...

CVE-2026-52690 Spoofed answers can mark an authoritative non-EDNS capable

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail...

EUVD-2026-39360

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail...

CVE-2026-52690

CVE-2026-52690 affects the PowerDNS Recursor. Spoofed replies can cause an authoritative server’s IP to be marked as not supporting EDNS, leading to DNSSEC validation failures for records served by that server. The vulnerability’s impact is documented as enabling validation failures in the presen...

CVE-2026-52690

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail...

CVE-2026-52690

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail...

CVE-2026-42387

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation...

CVE-2026-42387 Insufficient input validation in ZoneToCache

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation...

CVE-2026-42387

PowerDNS Recursor is affected by CVE-2026-42387 due to insufficient input validation in the ZoneToCache function. A malicious authoritative server can send a crafted zone via ZoneToCache, causing the Recursor to crash and impacting availability. Root cause identified as insufficient input validat...

EUVD-2026-39357

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation...

CVE-2026-42387

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation...

CVE-2026-42002

A flaw was found in pdns-recursor. Concurrency and locking defects in the Generic Security Service Algorithm for Secret Key Transaction Signatures GSS-TSIG could allow a remote attacker to cause a denial of service...

PowerDNS -- Multiple vulnerabilities

PowerDNS Team reports: 2025-07: Internal logic flaw in cache management can lead to a denial of service in Recursor When using views, queries sent using TCP Proxy Protocol will select the view according to the address of the proxy, rather than the address of the initial query. This can lead to...

async-std-resolver (>=0.25.0-alpha.1 <=0.25.0-alpha.5), ezk-sip-ua (>=0.5.0 <=0.7.1) +3 more potentially affected by unknown CVE via hickory-proto (=0.25.0-alpha.5)

hickory-proto CARGO version =0.25.0-alpha.5 is affected by a known vulnerability. The following packages have a transitive dependency on hickory-proto and may be impacted: - async-std-resolver =0.25.0-alpha.1, =0.5.0, =0.25.0-alpha.1, =0.25.0-alpha.5 - hickory-resolver =0.25.0-alpha.1 Source cves...

hickory-server (>=0.24.0 <=0.25.0-alpha.1) potentially affected by unknown CVE via hickory-recursor (>=0.24.4 <=0.25.0-alpha.1)

hickory-recursor CARGO version =0.24.4, =0.24.0, =0.25.0-alpha.1 Source cves: unknown CVE Source advisory: OSV:GHSA-83HF-93M4-RGWQ...

GHSA-83HF-93M4-RGWQ Hickory DNS's Record Cache Accepts AUTHORITY-Section NS from Sibling Zone via Parent-Pool Zone-Context Elevation

Summary The Hickory DNS project's experimental hickory-recursor crate's record cache DnsLru stores records from DNS responses keyed by each record's own name, type, not by the query that triggered the response. cacheresponse in crates/recursor/src/lib.rs chains ANSWER, AUTHORITY, and ADDITIONAL...

Hickory DNS's Record Cache Accepts AUTHORITY-Section NS from Sibling Zone via Parent-Pool Zone-Context Elevation

Summary The Hickory DNS project's experimental hickory-recursor crate's record cache DnsLru stores records from DNS responses keyed by each record's own name, type, not by the query that triggered the response. cacheresponse in crates/recursor/src/lib.rs chains ANSWER, AUTHORITY, and ADDITIONAL...