cve-2026-5950-bind9-resolver-dos

CVE-2026-5950 - BIND 9 Resolver DoS Research notes and defensive guidance for CVE-2026-5950, an unbounded resend loop vulnerability in the BIND 9 resolver state machine. Overview CVE-2026-5950 affects recursive BIND 9 resolvers. Under specific retry and bad-server handling conditions, a remote...

SUSE CVE-2026-94300

Replaying GSS-TSIG signed UDP messages can result in memory corruption in "named". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker controls, the attacker may potentially...

BIND-9-Cache-Poisoning-PoC---CVE-2025-40778

BIND 9 Cache Poisoning PoC - CVE-2025-40778 Conceptual Overview This vulnerability allows an attacker to corrupt the DNS cache of a BIND Resolver, forcing legitimate users to be redirected to malicious IP addresses without their knowledge. The core logic of the attack: The attack relies on...

CVE-2026-94300

Replaying GSS-TSIG signed UDP messages can result in memory corruption in "named". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker controls, the attacker may potentially...

EUVD-2026-107254

Replaying GSS-TSIG signed UDP messages can result in memory corruption in "named". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker controls, the attacker may potentially...

CVE-2026-94300 Concurrent GSS-TSIG messages corrupt memory

Replaying GSS-TSIG signed UDP messages can result in memory corruption in "named". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker controls, the attacker may potentially...

CVE-2026-94300

Replaying GSS-TSIG signed UDP messages can result in memory corruption in "named". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker controls, the attacker may potentially...

CVE-2026-94300

The BIND 9 software (component named ) is vulnerable to memory corruption due to a race condition when processing concurrent GSS-TSIG signed UDP messages. An attacker who captures a previously signed UDP message can replay it while the negotiated TSIG key remains valid. By simultaneously sending ...

bind: bind: Denial of Service via long query names in RPZ processing

A flaw was found in BIND. A remote attacker can send specially crafted, excessively long query names to a resolver configured with Response Policy Zones RPZ and wildcard policies. Improper handling of the resulting error condition can cause the service to terminate unexpectedly, leading to a Deni...

Amazon Linux 2 : bind (ALAS-2026-3995)

The version of bind installed on the remote host is prior to 9.11.4-26.P2. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3995 advisory. For a secondary zone with transfers restricted by TSIG, named may start to serve the data provided in a zone transfer...

bind: bind: Denial of Service via long query names in RPZ processing

A flaw was found in BIND. A remote attacker can send specially crafted, excessively long query names to a resolver configured with Response Policy Zones RPZ and wildcard policies. Improper handling of the resulting error condition can cause the service to terminate unexpectedly, leading to a Deni...

bind: BIND 9: Remote Denial of Service via cached SVCB/HTTPS AliasMode records

A flaw was found in BIND 9. A remote attacker can exploit this vulnerability by querying a BIND resolver for the root of a specially crafted, cached tree of SVCB/HTTPS AliasMode records. This action causes the resolver to spend a disproportionate amount of CPU time constructing the response,...

bind: BIND 9: Remote Denial of Service via cached SVCB/HTTPS AliasMode records

A flaw was found in BIND 9. A remote attacker can exploit this vulnerability by querying a BIND resolver for the root of a specially crafted, cached tree of SVCB/HTTPS AliasMode records. This action causes the resolver to spend a disproportionate amount of CPU time constructing the response,...

Rocky Linux 9.6 [TuxCare] Security Update: bind / bind-chroot / bind-devel / bind-dnssec-doc / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1785489780)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1785489780 advisory. - BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to forge authenticated NXDOMAIN...

CentOS Linux 7 [TuxCare] Security Update: bind / bind-chroot / bind-devel / bind-export-devel / etc (CENTOS7:CLSA-2026:1790352942)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2026:1790352942 advisory. - If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in named results in a...

CentOS Linux 8 [TuxCare] Security Update: bind / bind-chroot / bind-devel / bind-export-devel / etc (CENTOS-STREAM8:CLSA-2026:1785835455)

The CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS- STREAM8:CLSA-2026:1785835455 advisory. - A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage...

Rocky Linux 9.6 [TuxCare] Security Update: bind / bind-chroot / bind-devel / bind-dnssec-doc / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1780593591)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1780593591 advisory. - BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory...

CentOS Linux 8 [TuxCare] Security Update: bind / bind-chroot / bind-devel / bind-export-devel / etc Multiple Vulnerabilities (CENTOS-STREAM8:CLSA-2026:1780475528)

The CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS-STREAM8:CLSA-2026:1780475528 advisory. - BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory...

AlmaLinux 9.2 [TuxCare] Security Update: bind / bind-chroot / bind-devel / bind-dnssec-doc / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1787734642)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1787734642 advisory. - BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to forge authenticated NXDOMAIN...

SUSE CVE-2026-19666

On a resolver configured to use dns64, if an applicable answer from the authoritative server is malformed in a specific way, the resolver named process will exit unexpectedly. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1...