AlmaLinux 9 : gnutls (ALSA-2026:20612)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:20612 advisory. gnutls: Fix qsort comparator in DTLS reassembly CVE-2026-42009 gnutls: Fix crashing on an underflow with a DTLS datagram CVE-2026-33845 gnutls: Fix RSA-P...

CVE-2026-54908 Pion DTLS: Denial of service via panic while parsing a crafted ECDHE_PSK ServerKeyExchange message

Pion DTLS is a Go implementation of Datagram Transport Layer Security. Versions prior to 3.1.4 are vulnerable to Remote Denial of Service via panic while parsing a crafted ECDHEPSK ServerKeyExchange message. This issue has been fixed in version 3.1.4...

gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability

A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security DTLS packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This...

gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability

A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security DTLS packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This...

gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly

A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in mergehandshakepacket where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the messagelength field remains...

gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment

A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service...

RHEL 8 : gnutls and libtasn1 (RHSA-2026:30849)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:30849 advisory. The gnutls packages provide the GNU Transport Layer Security GnuTLS library, which implements cryptographic algorithms and protocols such a...

gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly

A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in mergehandshakepacket where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the messagelength field remains...

Important: gnutls

Issue Overview: A remotely triggerable underflow in the DTLS reassembly code led to a heap overrun. The issue was reported in the issue tracker as 1811 by Joshua Rogers of AISLE Research Team. CVE-2026-33845 Affected Packages: gnutls Issue Correction: Run dnf update gnutls --releasever...

Amazon Linux 2023 : gnutls, gnutls-c++, gnutls-dane (ALAS2023-2026-1777)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1777 advisory. A remotely triggerable underflow in the DTLS reassembly code led to a heap overrun. The issue was reported in the issue tracker as 1811 by Joshua Rogers of AISLE Research Team. CVE-2026-33845 Tenable h...

Security update for gnutls

This update for gnutls fixes the following issues CVE-2026-3833: x509/name-constraints: compare domain names case-insensitive bsc1263707. CVE-2026-5260: lib/pkcs11privkey: guard against overreading on short ciphertexts bsc1263715. CVE-2026-5419: gnutlscipherdecrypt3: make PKCS7 unpadding branch...

gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability

A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security DTLS packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This...

gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability

A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security DTLS packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This...

OESA-2026-2404 gnutls security update

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface API to access the secure communications protocols as well as APIs to parse and write X.509, PKCS 12, and other...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : GnuTLS vulnerabilities (USN-8284-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8284-1 advisory. Joshua Rogers discovered that GnuTLS did not properly handle malformed DTLS handshake fragments in certain cases. A remot...

Astra Linux – Vulnerability in openjdk-11

Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE component: JSSE. The supported versions affected include Oracle Java SE: 11.0.17, 17.0.5, 19.0.1; Oracle GraalVM Enterprise Edition: 20.3.8, 21.3.4, and 22.3.0. This easily exploitable vulnerability...

CVE-2026-42009

CVE-2026-42009 affects the GnuTLS library, where DTLS packet reordering uses a comparator that mishandles duplicate sequence numbers. This can cause unstable DTLS packet ordering or undefined behavior, leading to a denial of service. The vulnerability is described consistently across NVD entries ...

SUSE-SU-2026:21752-1 Security update for gnutls

This update for gnutls fixes the following issues - CVE-2026-3832: cert-session: fix multi-entry OCSP revocation bypass bsc1263706. - CVE-2026-3833: x509/name-constraints: compare domain names case-insensitive bsc1263707. - CVE-2026-5260: lib/pkcs11privkey: guard against overreading on short...

GnuTLS 安全漏洞

GnuTLS is an open-source, free security communication library developed by GnuTLS that enables the implementation of SSL, TLS, and DTLS protocols. There is a security vulnerability in gnutls, which stems from a logic issue with the reordering of Datagram Transport Layer Security packets. This...

OESA-2026-2333 gnutls security update

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface API to access the secure communications protocols as well as APIs to parse and write X.509, PKCS 12, and other...