RHSA-2026:30850HighCVSS 8.2

Red Hat Security Advisory: gnutls and libtasn1 security update

Published
June 29, 2026
Last Modified
August 25, 2026

🔗 CVE IDs covered (13)

CVE-2026-42012 →CVE-2026-33845 →CVE-2026-42009 →CVE-2026-42010 →CVE-2026-42013 →CVE-2026-42014 →CVE-2026-42015 →CVE-2024-12133 →CVE-2025-14831 →CVE-2026-3833 →CVE-2026-5260 →CVE-2026-33846 →CVE-2026-42011 →

📋 Description

CVE-2024-12133 — libtasn1: Inefficient DER Decoding in libtasn1 Leading to Potential Remote DoS CVE-2025-14831 — gnutls: GnuTLS: Denial of Service via excessive resource consumption during certificate verification 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-2026-33845 — 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 products124

  • Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • gnutls-0:3.6.16-7.el8_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • gnutls-0:3.6.16-7.el8_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • gnutls-0:3.6.16-7.el8_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • gnutls-0:3.6.16-7.el8_8.4.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • gnutls-0:3.6.16-7.el8_8.4.src as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • gnutls-0:3.6.16-7.el8_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • gnutls-0:3.6.16-7.el8_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • gnutls-c++-0:3.6.16-7.el8_8.4.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • gnutls-c++-0:3.6.16-7.el8_8.4.i686 as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • gnutls-c++-0:3.6.16-7.el8_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • gnutls-c++-0:3.6.16-7.el8_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • gnutls-c++-0:3.6.16-7.el8_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • gnutls-c++-debuginfo-0:3.6.16-7.el8_8.4.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • gnutls-c++-debuginfo-0:3.6.16-7.el8_8.4.i686 as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • gnutls-c++-debuginfo-0:3.6.16-7.el8_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • gnutls-c++-debuginfo-0:3.6.16-7.el8_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • gnutls-c++-debuginfo-0:3.6.16-7.el8_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • gnutls-c++-debuginfo-0:3.6.16-7.el8_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • gnutls-c++-debuginfo-0:3.6.16-7.el8_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • gnutls-c++-debuginfo-0:3.6.16-7.el8_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • gnutls-c++-debuginfo-0:3.6.16-7.el8_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • gnutls-c++-debuginfo-0:3.6.16-7.el8_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • gnutls-dane-0:3.6.16-7.el8_8.4.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • gnutls-dane-0:3.6.16-7.el8_8.4.i686 as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • gnutls-dane-0:3.6.16-7.el8_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • gnutls-dane-0:3.6.16-7.el8_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • +94 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 (16)