GHSA-QHMP-Q7XH-99RH CoreDNS has TSIG authentication bypass on DoT, DoH, DoH3, DoQ, and gRPC

Summary CoreDNS' tsig plugin can be bypassed on non-plain-DNS transports because it trusts the transport writer's TsigStatus instead of performing verification itself. In the attached PoC, plain DNS/TCP correctly rejects an invalid TSIG NOTAUTH, while the same invalid-TSIG request is accepted ove...

DEBIAN-CVE-2026-6238

The deprecated functions nsprintrrf, nsprintrr and fpnquery in the GNU C Library version 2.0.1 to version 2.43 fail to validate the RDATA content against the RDATA length in a DNS response when processing A6, CERT, LOC, TKEY or TSIG records, which may allow an attacker to craft a DNS response,...

CVE-2026-6238

The deprecated functions nsprintrrf, nsprintrr and fpnquery in the GNU C Library version 2.0.1 to version 2.43 fail to validate the RDATA content against the RDATA length in a DNS response when processing A6, CERT, LOC, TKEY or TSIG records, which may allow an attacker to craft a DNS response,...

CVE-2026-5435

A flaw was found in glibc, the GNU C Library. Specifically, deprecated functions responsible for printing TSIG Transaction Signature records fail to properly manage memory buffers. This oversight can lead to an out-of-bounds write when processing specially crafted TSIG records. An attacker could...

DEBIAN-CVE-2026-5435

The deprecated functions nsprintrrf, nsprintrr and fpnquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records...

CVE-2026-5435

The deprecated functions nsprintrrf, nsprintrr and fpnquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records...

CVE-2026-5435 Potential buffer overflow in ns_sprintrrf TSIG handling path

The deprecated functions nsprintrrf, nsprintrr and fpnquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records...

CVE-2026-5435

The deprecated functions nsprintrrf, nsprintrr and fpnquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records...

EUVD-2026-26036

The deprecated functions nsprintrrf, nsprintrr and fpnquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records...

CVE-2026-5435

CVE-2026-5435 affects the GNU C Library (glibc) where deprecated functions for printing TSIG records (ns_printrrf, ns_printrr, fp_nquery) do not respect caller buffer lengths, enabling an out-of-bounds write in versions 2.2 and newer. This can lead to a denial of service and, in some scenarios, p...

GNU C Library 安全漏洞

The GNU C Library is an open-source, free C-language compiler program published by the GNU community under the LGPL license. Versions of the GNU C Library 2.2 and later contain security vulnerabilities. These vulnerabilities arise when functions such as nsprintrrf, nsprintrr, and fpnquery handle...

PT-2026-35750

Name of the Vulnerable Software and Affected Versions GNU C Library versions 2.2 through 2.33 GNU C Library version 2.34 affected versions not specified Description The deprecated functions ns printrrf, ns printrr, and fp nquery fail to validate RDATA content against the RDATA length in a DNS...

PT-2026-35713

Name of the Vulnerable Software and Affected Versions glibc versions 2.2 and newer Description The deprecated functions ns printrrf, ns printrr, and fp nquery fail to enforce the caller-supplied buffer length. This can lead to an out-of-bounds write, which occurs when data is written outside the...

DEBIAN-CVE-2026-3119

Under certain conditions, named may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature TSIG from a key declared in the named configuration. This issue affects BIND 9 versions 9.20....

CVE-2026-3119 Authenticated query containing a TKEY record may cause named to terminate unexpectedly

Under certain conditions, named may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature TSIG from a key declared in the named configuration. This issue affects BIND 9 versions 9.20....

UBUNTU-CVE-2026-3119

Under certain conditions, named may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature TSIG from a key declared in the named configuration. This issue affects BIND 9 versions 9.20....

ISC BIND 9.20.0 < 9.20.9 / 9.21.0 < 9.21.8 Assertion Failure (cve-2025-40775)

The version of ISC BIND installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the cve-2025-40775 advisory. - When an incoming DNS protocol message includes a Transaction Signature TSIG, BIND always checks it. If the TSIG contains a...

Azure Linux 3.0 Security Update: bind (CVE-2025-40775)

The version of bind installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-40775 advisory. - When an incoming DNS protocol message includes a Transaction Signature TSIG, BIND always checks it. If the TSI...

MiracleLinux 4 : bind-9.8.2-0.68.8.0.1.rc1.AXS4 (AXSA:2020-735:07)

The remote MiracleLinux 4 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2020-735:07 advisory. bind: truncated TSIG response can lead to an assertion failure CVE-2020-8622 Tenable has extracted the preceding description block directly from the...

MiracleLinux 7 : bind-9.11.4-16.P2.6.0.1.el7.AXS7 (AXSA:2020-120:04)

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2020-120:04 advisory. bind: BIND does not sufficiently limit the number of fetches performed when processing referrals CVE-2020-8616 bind: A logic error in code which chec...