RHSA-2026:43575MediumCVSS 8.2

Red Hat Security Advisory: gnutls security update

Published
July 22, 2026
Last Modified
September 2, 2026

🔗 CVE IDs covered (6)

CVE-2026-3833 →CVE-2026-42011 →CVE-2026-42012 →CVE-2026-42013 →CVE-2026-42014 →CVE-2026-42015 →

📋 Description

CVE-2026-3833 — gnutls: GnuTLS: Policy bypass due to case-sensitive nameConstraints comparison CVE-2026-42011 — gnutls: gnutls: Security bypass due to incorrect name constraint handling CVE-2026-42012 — gnutls: gnutls: Certificate validation bypass due to improper handling of URI and SRV SANs CVE-2026-42013 — gnutls: gnutls: Certificate validation bypass due to oversized Subject Alternative Name CVE-2026-42014 — gnutls: gnutls: Use-after-free in gnutls_pkcs11_token_set_pin CVE-2026-42015 — gnutls: gnutls: Memory corruption due to off-by-one error in PKCS#12 bag handling

🎯 Affected products41

  • Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-0:3.3.29-9.el7_9.2.i686 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-0:3.3.29-9.el7_9.2.ppc as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-0:3.3.29-9.el7_9.2.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-0:3.3.29-9.el7_9.2.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-0:3.3.29-9.el7_9.2.s390 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-0:3.3.29-9.el7_9.2.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-0:3.3.29-9.el7_9.2.src as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-0:3.3.29-9.el7_9.2.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-c++-0:3.3.29-9.el7_9.2.i686 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-c++-0:3.3.29-9.el7_9.2.ppc as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-c++-0:3.3.29-9.el7_9.2.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-c++-0:3.3.29-9.el7_9.2.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-c++-0:3.3.29-9.el7_9.2.s390 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-c++-0:3.3.29-9.el7_9.2.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-c++-0:3.3.29-9.el7_9.2.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-dane-0:3.3.29-9.el7_9.2.i686 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-dane-0:3.3.29-9.el7_9.2.ppc as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-dane-0:3.3.29-9.el7_9.2.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-dane-0:3.3.29-9.el7_9.2.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-dane-0:3.3.29-9.el7_9.2.s390 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-dane-0:3.3.29-9.el7_9.2.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-dane-0:3.3.29-9.el7_9.2.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-debuginfo-0:3.3.29-9.el7_9.2.i686 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-debuginfo-0:3.3.29-9.el7_9.2.ppc as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-debuginfo-0:3.3.29-9.el7_9.2.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-debuginfo-0:3.3.29-9.el7_9.2.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-debuginfo-0:3.3.29-9.el7_9.2.s390 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-debuginfo-0:3.3.29-9.el7_9.2.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • gnutls-debuginfo-0:3.3.29-9.el7_9.2.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • +11 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (9)