Issued:
2026-07-22
Updated:
2026-07-22

RHSA-2026:43575 - Moderate: gnutls security update

Synopsis

Moderate: gnutls security update

Type/Severity

Security Advisory: Moderate

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 Moderate. 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: Policy bypass due to case-sensitive nameConstraints comparison (CVE-2026-3833)

  • gnutls: gnutls: Security bypass due to incorrect name constraint handling (CVE-2026-42011)

  • gnutls: gnutls: Certificate validation bypass due to improper handling of URI and SRV SANs (CVE-2026-42012)

  • gnutls: gnutls: Certificate validation bypass due to oversized Subject Alternative Name (CVE-2026-42013)

  • gnutls: Fix use-after-free in gnutls_pkcs11_token_set_pin (CVE-2026-42014)

  • gnutls: gnutls: Memory corruption due to off-by-one error in PKCS#12 bag handling (CVE-2026-42015)

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_9.2.ppc.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.2.x86_64.rpm
  • gnutls-devel-3.3.29-9.el7_9.2.ppc.rpm
  • gnutls-utils-3.3.29-9.el7_9.2.x86_64.rpm
  • gnutls-c++-3.3.29-9.el7_9.2.ppc.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.2.s390.rpm
  • gnutls-dane-3.3.29-9.el7_9.2.ppc64.rpm
  • gnutls-c++-3.3.29-9.el7_9.2.i686.rpm
  • gnutls-c++-3.3.29-9.el7_9.2.ppc64le.rpm
  • gnutls-dane-3.3.29-9.el7_9.2.ppc64le.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.2.i686.rpm
  • gnutls-3.3.29-9.el7_9.2.i686.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.2.ppc64le.rpm
  • gnutls-dane-3.3.29-9.el7_9.2.i686.rpm
  • gnutls-3.3.29-9.el7_9.2.s390.rpm
  • gnutls-devel-3.3.29-9.el7_9.2.ppc64.rpm
  • gnutls-devel-3.3.29-9.el7_9.2.ppc64le.rpm
  • gnutls-devel-3.3.29-9.el7_9.2.x86_64.rpm
  • gnutls-c++-3.3.29-9.el7_9.2.s390x.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.2.s390x.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.2.ppc64.rpm
  • gnutls-3.3.29-9.el7_9.2.ppc64.rpm
  • gnutls-utils-3.3.29-9.el7_9.2.ppc64.rpm
  • gnutls-dane-3.3.29-9.el7_9.2.x86_64.rpm
  • gnutls-3.3.29-9.el7_9.2.src.rpm
  • gnutls-3.3.29-9.el7_9.2.s390x.rpm
  • gnutls-dane-3.3.29-9.el7_9.2.ppc.rpm
  • gnutls-dane-3.3.29-9.el7_9.2.s390x.rpm
  • gnutls-devel-3.3.29-9.el7_9.2.i686.rpm
  • gnutls-utils-3.3.29-9.el7_9.2.s390x.rpm
  • gnutls-c++-3.3.29-9.el7_9.2.x86_64.rpm
  • gnutls-utils-3.3.29-9.el7_9.2.ppc64le.rpm
  • gnutls-3.3.29-9.el7_9.2.x86_64.rpm
  • gnutls-debuginfo-3.3.29-9.el7_9.2.ppc.rpm
  • gnutls-devel-3.3.29-9.el7_9.2.s390.rpm
  • gnutls-c++-3.3.29-9.el7_9.2.s390.rpm
  • gnutls-dane-3.3.29-9.el7_9.2.s390.rpm
  • gnutls-devel-3.3.29-9.el7_9.2.s390x.rpm
  • gnutls-3.3.29-9.el7_9.2.ppc64le.rpm
  • gnutls-c++-3.3.29-9.el7_9.2.ppc64.rpm

Fixes

CVEs

References

Additional information