CVE-2026-52686

A flaw was found in pdns-recursor. This vulnerability allows a remote attacker to bypass DNSSEC Domain Name System Security Extensions validation. The flaw occurs because the system accepts wildcard expansion proofs NSEC/NSEC3 records without proper signature validation when the wildcard answer i...

SUSE CVE-2026-12617

The issue is unexpected program termination based on ordering and/or specific content in responses to queries for CNAME or DNAME, and A records. Specifically, if a client queries for a DNAME and A record below the DNAME to the resolver, and the authoritative server responds positively to the A...

SUSE CVE-2026-52686

The issue is a DNSSEC validation bypass where wildcard expansion proofs NSEC/NSEC3 records are accepted without signature validation when the wildcard answer is a CNAME or DNAME record...

CVE-2026-52686 Wildcard CNAME proof validation bypass

The issue is a DNSSEC validation bypass where wildcard expansion proofs NSEC/NSEC3 records are accepted without signature validation when the wildcard answer is a CNAME or DNAME record...

CVE-2026-12617

The issue is unexpected program termination based on ordering and/or specific content in responses to queries for CNAME or DNAME, and A records. Specifically, if a client queries for a DNAME and A record below the DNAME to the resolver, and the authoritative server responds positively to the A...

ALPINE-CVE-2026-12617

The issue is unexpected program termination based on ordering and/or specific content in responses to queries for CNAME or DNAME, and A records. Specifically, if a client queries for a DNAME and A record below the DNAME to the resolver, and the authoritative server responds positively to the A...

CVE-2026-12617

CVE-2026-12617 affects ISC BIND 9: vulnerable in 9.18.0–9.18.50 and 9.20.0–9.20.24 (including 9.18.11-S1–9.18.50-S1 and 9.20.9-S1–9.20.24-S1). The issue causes named to quit unexpectedly when handling responses for CNAME/DNAME and A records under certain query/order scenarios, potentially leading...

CVE-2026-12617

The issue is unexpected program termination based on ordering and/or specific content in responses to queries for CNAME or DNAME, and A records. Specifically, if a client queries for a DNAME and A record below the DNAME to the resolver, and the authoritative server responds positively to the A...

MGASA-2026-0258 Updated bind packages fix a security vulnerability

The updated bind packages fix a security vulnerability: When BIND 9 was configured to use DNS64 and encounters a DNAME redirect, it could end up using freed memory for the DNS response owner name. This caused the response to contain corrupted data...

unbound: Unbound DNSSEC Validator Denial of Service via Incorrect Write Offset Counter in Chase-Reply Messages

A flaw was found in Unbound's DNSSEC validator when constructing chase-reply messages for validation. The code uses the wrong counter to calculate write offsets for ADDITIONAL section resource record sets. When a DNAME chain is combined with authority filtering, an uninitialized array slot is...

unbound: Unbound DNSSEC Validator Denial of Service via Incorrect Write Offset Counter in Chase-Reply Messages

A flaw was found in Unbound's DNSSEC validator when constructing chase-reply messages for validation. The code uses the wrong counter to calculate write offsets for ADDITIONAL section resource record sets. When a DNAME chain is combined with authority filtering, an uninitialized array slot is...

unbound: Unbound DNSSEC Validator Denial of Service via Incorrect Write Offset Counter in Chase-Reply Messages

A flaw was found in Unbound's DNSSEC validator when constructing chase-reply messages for validation. The code uses the wrong counter to calculate write offsets for ADDITIONAL section resource record sets. When a DNAME chain is combined with authority filtering, an uninitialized array slot is...

SUSE CVE-2026-42959

NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets fo...

CVE-2026-42959

A flaw was found in Unbound's DNSSEC validator when constructing chase-reply messages for validation. The code uses the wrong counter to calculate write offsets for ADDITIONAL section resource record sets. When a DNAME chain is combined with authority filtering, an uninitialized array slot is...

CVE-2026-42959

NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets fo...

CVE-2026-42959

NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets fo...

CVE-2026-42959 Crash during DNSSEC validation of malicious content

NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets fo...

CVE-2026-42959 Crash during DNSSEC validation of malicious content

NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets fo...

CVE-2026-42959

NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious upstream replies. When Unbound constructs chase-reply messages for validation, the code uses the wrong counter to calculate write offsets fo...

CVE-2026-42959

CVE-2026-42959 affects NLnet Labs Unbound up to version 1.25.0. The vulnerability lies in the DNSSEC validator: while constructing chase-reply messages, the code uses the wrong counter to calculate write offsets for ADDITIONAL section rrsets. This, combined with DNAME duplication increasing the A...