RHSA-2026:30004HighCVSS 8.2

Red Hat Security Advisory: gnutls security update

Published
June 25, 2026
Last Modified
August 25, 2026

🔗 CVE IDs covered (12)

CVE-2026-3833 →CVE-2026-42009 →CVE-2026-42010 →CVE-2026-42011 →CVE-2026-42012 →CVE-2026-42013 →CVE-2026-5260 →CVE-2026-5419 →CVE-2026-33845 →CVE-2026-33846 →CVE-2026-42014 →CVE-2026-42015 →

📋 Description

CVE-2026-3833 — gnutls: GnuTLS: Policy bypass due to case-sensitive nameConstraints comparison CVE-2026-5260 — gnutls: gnutls: Information disclosure via heap overread in RSA key exchange CVE-2026-5419 — gnutls: gnutls: Information disclosure via timing side-channel in PKCS#7 padding removal CVE-2026-33845 — gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment CVE-2026-33846 — gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly CVE-2026-42009 — gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability CVE-2026-42010 — gnutls: gnutls: Authentication Bypass via NUL Character in Username 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 products77

  • Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-0:3.8.3-6.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-0:3.8.3-6.el9_6.4.i686 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-0:3.8.3-6.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-0:3.8.3-6.el9_6.4.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-0:3.8.3-6.el9_6.4.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-0:3.8.3-6.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-c++-0:3.8.3-6.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-c++-0:3.8.3-6.el9_6.4.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-c++-0:3.8.3-6.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-c++-0:3.8.3-6.el9_6.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-c++-0:3.8.3-6.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-c++-debuginfo-0:3.8.3-6.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-c++-debuginfo-0:3.8.3-6.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-c++-debuginfo-0:3.8.3-6.el9_6.4.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-c++-debuginfo-0:3.8.3-6.el9_6.4.i686 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-c++-debuginfo-0:3.8.3-6.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-c++-debuginfo-0:3.8.3-6.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-c++-debuginfo-0:3.8.3-6.el9_6.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-c++-debuginfo-0:3.8.3-6.el9_6.4.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-c++-debuginfo-0:3.8.3-6.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-c++-debuginfo-0:3.8.3-6.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • gnutls-dane-0:3.8.3-6.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-dane-0:3.8.3-6.el9_6.4.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-dane-0:3.8.3-6.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-dane-0:3.8.3-6.el9_6.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-dane-0:3.8.3-6.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-dane-debuginfo-0:3.8.3-6.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • gnutls-dane-debuginfo-0:3.8.3-6.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.6)
  • +47 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 (15)