RHSA-2026:30849HighCVSS 8.2

Red Hat Security Advisory: gnutls and libtasn1 security update

Published
June 29, 2026
Last Modified
September 2, 2026

🔗 CVE IDs covered (13)

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

📋 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 products100

  • Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)
  • gnutls-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • gnutls-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)
  • gnutls-0:3.6.16-5.el8_6.5.src as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • gnutls-0:3.6.16-5.el8_6.5.src as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)
  • gnutls-0:3.6.16-5.el8_6.5.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • gnutls-0:3.6.16-5.el8_6.5.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)
  • gnutls-c++-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • gnutls-c++-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • gnutls-c++-0:3.6.16-5.el8_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • gnutls-c++-0:3.6.16-5.el8_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • gnutls-c++-debuginfo-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • gnutls-c++-debuginfo-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • gnutls-c++-debuginfo-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • gnutls-c++-debuginfo-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)
  • gnutls-c++-debuginfo-0:3.6.16-5.el8_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • gnutls-c++-debuginfo-0:3.6.16-5.el8_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • gnutls-c++-debuginfo-0:3.6.16-5.el8_6.5.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • gnutls-c++-debuginfo-0:3.6.16-5.el8_6.5.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)
  • gnutls-dane-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • gnutls-dane-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • gnutls-dane-0:3.6.16-5.el8_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • gnutls-dane-0:3.6.16-5.el8_6.5.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • gnutls-dane-debuginfo-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • gnutls-dane-debuginfo-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • gnutls-dane-debuginfo-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • gnutls-dane-debuginfo-0:3.6.16-5.el8_6.5.i686 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)
  • +70 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)