RHSA-2026:34372 — Security Advisory

An update for gnutls is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS.

Security Fix(es):

• gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment (CVE-2026-33845)

• gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly (CVE-2026-33846)

• gnutls: Fix qsort comparator in DTLS reassembly (CVE-2026-42009)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.