Issued:
2026-07-01
Updated:
2026-07-01

RHSA-2026:34372 - Important: gnutls security update

Synopsis

Important: gnutls security update

Type/Severity

Security Advisory Important

Topic

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.

Description

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux Server - Extended Life Cycle Support7x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian7ppc64le
Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian7ppc64
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)7s390x

Updated Packages

  • gnutls-3.3.29-9.el7_9.1.ppc.rpm
  • gnutls-devel-3.3.29-9.el7_9.1.i686.rpm
  • gnutls-devel-3.3.29-9.el7_9.1.ppc64le.rpm
  • gnutls-utils-3.3.29-9.el7_9.1.ppc64.rpm
  • gnutls-dane-3.3.29-9.el7_9.1.ppc64le.rpm
  • gnutls-3.3.29-9.el7_9.1.s390x.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.1.i686.rpm
  • gnutls-c++-3.3.29-9.el7_9.1.ppc.rpm
  • gnutls-c++-3.3.29-9.el7_9.1.x86_64.rpm
  • gnutls-c++-3.3.29-9.el7_9.1.s390.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.1.ppc64.rpm
  • gnutls-devel-3.3.29-9.el7_9.1.s390.rpm
  • gnutls-c++-3.3.29-9.el7_9.1.ppc64.rpm
  • gnutls-dane-3.3.29-9.el7_9.1.s390.rpm
  • gnutls-3.3.29-9.el7_9.1.s390.rpm
  • gnutls-dane-3.3.29-9.el7_9.1.ppc.rpm
  • gnutls-devel-3.3.29-9.el7_9.1.s390x.rpm
  • gnutls-utils-3.3.29-9.el7_9.1.x86_64.rpm
  • gnutls-dane-3.3.29-9.el7_9.1.ppc64.rpm
  • gnutls-3.3.29-9.el7_9.1.x86_64.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.1.ppc64le.rpm
  • gnutls-devel-3.3.29-9.el7_9.1.ppc64.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.1.ppc.rpm
  • gnutls-3.3.29-9.el7_9.1.src.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.1.s390x.rpm
  • gnutls-3.3.29-9.el7_9.1.i686.rpm
  • gnutls-dane-3.3.29-9.el7_9.1.i686.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.1.x86_64.rpm
  • gnutls-c++-3.3.29-9.el7_9.1.s390x.rpm
  • gnutls-devel-3.3.29-9.el7_9.1.ppc.rpm
  • gnutls-c++-3.3.29-9.el7_9.1.i686.rpm
  • gnutls-utils-3.3.29-9.el7_9.1.ppc64le.rpm
  • gnutls-devel-3.3.29-9.el7_9.1.x86_64.rpm
  • gnutls-3.3.29-9.el7_9.1.ppc64le.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.1.s390.rpm
  • gnutls-c++-3.3.29-9.el7_9.1.ppc64le.rpm
  • gnutls-3.3.29-9.el7_9.1.ppc64.rpm
  • gnutls-dane-3.3.29-9.el7_9.1.s390x.rpm
  • gnutls-dane-3.3.29-9.el7_9.1.x86_64.rpm
  • gnutls-utils-3.3.29-9.el7_9.1.s390x.rpm

Fixes

CVEs

References

Additional information