Security update for unbound

This update for unbound fixes the following issues: CVE-2026-77860: 'serve-expired' can bypass Unbound 'wait-limit' bsc1280403. CVE-2026-77955: Possible ZONEMD verification bypass window bsc1280404. CVE-2026-78227: Use-after-free in DoQ stream output buffer on reset re-transmission bsc1280405...

SUSE-SU-2026:4620-1 Security update for unbound

This update for unbound fixes the following issues: - CVE-2026-77860: 'serve-expired' can bypass Unbound 'wait-limit' bsc1280403. - CVE-2026-77955: Possible ZONEMD verification bypass window bsc1280404. - CVE-2026-78227: Use-after-free in DoQ stream output buffer on reset re-transmission...

Important: Red Hat Security Advisory: bind9.16 security, bug fix, and enhancement update

An update for bind9.16 is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common...

bind: bind9: Cache poisoning via label count discrepancy, RRSIG, wildcards

It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes named to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For...

bind: bind9: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field

The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone...

bind: bind9: Potential memory usage beyond configured limits

A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able to send queries faster than the resolver can perform validation. The increased memory usage can be orders of magnitude beyond the...

TencentOS Server 4: unbound (TSSA-2026:1068)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:1068 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

EulerOS 2.0 SP13 : bind (EulerOS-SA-2026-4031)

According to the versions of the bind packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to forge authenticated NXDOMAIN responses. This issue...

EulerOS 2.0 SP13 : bind (EulerOS-SA-2026-4122)

According to the versions of the bind packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to forge authenticated NXDOMAIN responses. This issue...

EulerOS 2.0 SP11 : bind (EulerOS-SA-2026-4213)

According to the versions of the bind packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker...

EulerOS 2.0 SP11 : bind (EulerOS-SA-2026-4304)

According to the versions of the bind packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker...

TencentOS Server 4: bind (TSSA-2026:1074)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:1074 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

Rocky Linux 8 [CIQ] Security Update: bind9.16 / bind9.16-chroot / bind9.16-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_79113)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202679113 advisory. bind9: bind: BIND 9: Denial of Service via 16-bit length truncation in DNS negative cache handling CVE-2026-19667 bind: BIND: Denial of Service via crafte...

Rocky Linux 8 [CIQ] Security Update: bind / bind-chroot / bind-debuginfo / bind-debugsource / bind-devel / etc Multiple Vulnerabilities (crlsa-2026_79162)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202679162 advisory. bind9: bind: BIND 9: Denial of Service via 16-bit length truncation in DNS negative cache handling CVE-2026-19667 bind: BIND: Denial of Service via crafte...

CentOS Linux 7 [TuxCare] Security Update: unbound / unbound-devel / unbound-libs / unbound-python Multiple Vulnerabilities (CENTOS7:CLSA-2026:1791327169)

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1791327169 advisory. - In NLnet Labs Unbound up to and including 1.26.0, a 255 length query name with a large TCP response can lead to a heap buffer overflow...

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...

Important: bind

Issue Overview: For a secondary zone with transfers restricted by TSIG, named may start to serve the data provided in a zone transfer before the final message with the TSIG signature arrives. This could allow an attacker that does not actually possess a valid TSIG signature to send unauthorized...

SUSE-SU-2026:24128-1 Security update for unbound

This update for unbound fixes the following issues: - CVE-2026-77860: 'serve-expired' can bypass Unbound 'wait-limit' bsc1280403. - CVE-2026-77955: Possible ZONEMD verification bypass window bsc1280404. - CVE-2026-78227: Use-after-free in DoQ stream output buffer on reset re-transmission...

SUSE-SU-2026:24226-1 Security update for unbound

This update for unbound fixes the following issues: - CVE-2026-77860: 'serve-expired' can bypass Unbound 'wait-limit' bsc1280403. - CVE-2026-77955: Possible ZONEMD verification bypass window bsc1280404. - CVE-2026-78227: Use-after-free in DoQ stream output buffer on reset re-transmission...

OPENSUSE-SU-2026:22082-1 Security update for unbound

This update for unbound fixes the following issues: - CVE-2026-77860: 'serve-expired' can bypass Unbound 'wait-limit' bsc1280403. - CVE-2026-77955: Possible ZONEMD verification bypass window bsc1280404. - CVE-2026-78227: Use-after-free in DoQ stream output buffer on reset re-transmission...