CVE-2026-75029 Message parser retains every identical singleton RDATA, enabling wire-to-work amplification

In a query response, an attacker may send named multiple copies of a record that should only exist once such as an SOA record. If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly...

CVE-2026-75029

CVE-2026-75029 affects ISC BIND 9 (versions 9.11.0–9.18.50, 9.20.0–9.20.27, 9.21.0–9.21.25, and corresponding -S1 releases). The message parser fails to deduplicate singleton records (e.g., SOA) in a query response: when an attacker sends multiple copies with identical RDATA, each copy is appende...

Astra Linux – Vulnerability in unbound

Before version 1.9.5, Unbound allowed an out-of-bounds write operation through a compressed name in rdatacopy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, an ongoing Unbound installation cannot be remotely or locally exploited...

Linux Distros Unpatched Vulnerability : CVE-2026-56416

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In NLnet Labs Unbound up to and including version 1.25.1, when the validator builds the canonical RDATA form for an RRSIG-covered PX/RP/MINFO/SOA RRset, it...

ALPINE-CVE-2026-56416

In NLnet Labs Unbound up to and including version 1.25.1, when the validator builds the canonical RDATA form for an RRSIG-covered PX/RP/MINFO/SOA RRset, it computes the address of the second embedded domain name as 'datstart + dnamevaliddatstart, ...' and passes it straight to 'querydnametolower'...

CVE-2026-56416

In NLnet Labs Unbound up to and including version 1.25.1, when the validator builds the canonical RDATA form for an RRSIG-covered PX/RP/MINFO/SOA RRset, it computes the address of the second embedded domain name as 'datstart + dnamevaliddatstart, ...' and passes it straight to 'querydnametolower'...

CVE-2026-56416

Technical details required to assess impact are not publicly available in the provided documents. No additional specifics (versions beyond 1.25.1, exploitation paths, or fixes) are included. Monitor for updates.

CVE-2026-56416 Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name

In NLnet Labs Unbound up to and including version 1.25.1, when the validator builds the canonical RDATA form for an RRSIG-covered PX/RP/MINFO/SOA RRset, it computes the address of the second embedded domain name as 'datstart + dnamevaliddatstart, ...' and passes it straight to 'querydnametolower'...

CVE-2026-56416 Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name

In NLnet Labs Unbound up to and including version 1.25.1, when the validator builds the canonical RDATA form for an RRSIG-covered PX/RP/MINFO/SOA RRset, it computes the address of the second embedded domain name as 'datstart + dnamevaliddatstart, ...' and passes it straight to 'querydnametolower'...

EUVD-2026-47684

In NLnet Labs Unbound up to and including version 1.25.1, when the validator builds the canonical RDATA form for an RRSIG-covered PX/RP/MINFO/SOA RRset, it computes the address of the second embedded domain name as 'datstart + dnamevaliddatstart, ...' and passes it straight to 'querydnametolower'...

glibc: glibc: Application crash or uninitialized memory read via crafted DNS response

A flaw was found in glibc GNU C Library. The deprecated functions nsprintrrf, nsprintrr, and fpnquery do not properly validate the length of RDATA Resource Record Data in a DNS Domain Name System response when processing specific record types like LOC, CERT, TKEY, or TSIG. A remote attacker could...

glibc: glibc: Application crash or uninitialized memory read via crafted DNS response

A flaw was found in glibc GNU C Library. The deprecated functions nsprintrrf, nsprintrr, and fpnquery do not properly validate the length of RDATA Resource Record Data in a DNS Domain Name System response when processing specific record types like LOC, CERT, TKEY, or TSIG. A remote attacker could...

SUSE SLES15: glibc / glibc-32bit / glibc-devel / glibc-devel-32bit / etc (SUSE-SU-2026:3029-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3029-1 advisory. This update for glibc fixes the following issues - CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an...

Security update for glibc

This update for glibc fixes the following issues CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an out-of-bounds write bsc1263656. CVE-2026-6238: insufficient RDATA length validation can lead to application crashes or uninitialized memory disclosure bsc1263658. Patch...

SUSE-SU-2026:3030-1 Security update for glibc

This update for glibc fixes the following issues - CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an out-of-bounds write bsc1263656. - CVE-2026-6238: insufficient RDATA length validation can lead to application crashes or uninitialized memory disclosure bsc1263658...

SUSE-SU-2026:3029-1 Security update for glibc

This update for glibc fixes the following issues - CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an out-of-bounds write bsc1263656. - CVE-2026-6238: insufficient RDATA length validation can lead to application crashes or uninitialized memory disclosure bsc1263658...

SUSE-SU-2026:22523-1 Security update for glibc

This update for glibc fixes the following issues - CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an out-of-bounds write bsc1263656. - CVE-2026-6238: insufficient RDATA length validation can lead to application crashes or uninitialized memory disclosure bsc1263658...

openSUSE 16: cross-aarch64-glibc-devel / cross-ppc64le-glibc-devel / etc (openSUSE-SU-2026:21228-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21228-1 advisory. This update for glibc fixes the following issues - CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an out-of-bounds write...

OPENSUSE-SU-2026:21228-1 Security update for glibc

This update for glibc fixes the following issues - CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an out-of-bounds write bsc1263656. - CVE-2026-6238: insufficient RDATA length validation can lead to application crashes or uninitialized memory disclosure bsc1263658...

SUSE-SU-2026:22538-1 Security update for glibc

This update for glibc fixes the following issues - CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an out-of-bounds write bsc1263656. - CVE-2026-6238: insufficient RDATA length validation can lead to application crashes or uninitialized memory disclosure bsc1263658...