Security update for gnutls

Announcement ID:	SUSE-SU-2026:2087-1
Release Date:	2026-05-27T07:58:03Z
Rating:	important
References:	bsc#1263704 bsc#1263705 bsc#1263707 bsc#1263708 bsc#1263709 bsc#1263710 bsc#1263711 bsc#1263712 bsc#1263713 bsc#1263714 bsc#1263715
Cross-References:	CVE-2026-33845 CVE-2026-33846 CVE-2026-3833 CVE-2026-42009 CVE-2026-42010 CVE-2026-42011 CVE-2026-42012 CVE-2026-42013 CVE-2026-42014 CVE-2026-42015 CVE-2026-5260
CVSS scores:	CVE-2026-33845 ( SUSE ): 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2026-33845 ( SUSE ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H CVE-2026-33845 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-33845 ( NVD ): 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVE-2026-33846 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2026-33846 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-33846 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-3833 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVE-2026-3833 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-3833 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-3833 ( NVD ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVE-2026-42009 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2026-42009 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-42009 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-42010 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVE-2026-42010 ( SUSE ): 7.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N CVE-2026-42010 ( NVD ): 7.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N CVE-2026-42010 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-42011 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVE-2026-42011 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-42011 ( NVD ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVE-2026-42012 ( NVD ): 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N CVE-2026-42013 ( SUSE ): 8.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N CVE-2026-42013 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N CVE-2026-42013 ( NVD ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N CVE-2026-42014 ( SUSE ): 5.1 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVE-2026-42014 ( SUSE ): 4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2026-42015 ( SUSE ): 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVE-2026-42015 ( SUSE ): 6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H CVE-2026-42015 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2026-5260 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2026-5260 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-5260 ( NVD ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Affected Products:	openSUSE Leap 15.4 SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise High Performance Computing 15 SP5 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 SUSE Linux Enterprise Micro 5.4 SUSE Linux Enterprise Micro 5.5 SUSE Linux Enterprise Micro for Rancher 5.4 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server 15 SP4 LTSS SUSE Linux Enterprise Server 15 SP5 SUSE Linux Enterprise Server 15 SP5 LTSS SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP5

An update that solves 11 vulnerabilities can now be installed.

Description:

This update for gnutls fixes the following issues

• CVE-2026-3833: x509/name-constraints: compare domain names case-insensitive (bsc#1263707).
• CVE-2026-5260: lib/pkcs11_privkey: guard against overreading on short ciphertexts (bsc#1263715).
• CVE-2026-33845: buffers: switch from end_offset over to frag_length (bsc#1263704).
• CVE-2026-33846: buffers: add more checks to DTLS reassembly (bsc#1263705).
• CVE-2026-42009: lib/buffers: ensure packets have differing sequence numbers (bsc#1263708).
• CVE-2026-42010: lib/auth/rsa_psk: fix binary PSK identity lookup (bsc#1263709).
• CVE-2026-42011: x509/name_constraints: fix intersecting empty constraints (bsc#1263710).
• CVE-2026-42012: x509/hostname-verify: make URI/SRV SAN preclude CN fallback (bsc#1263711).
• CVE-2026-42013: x509: prevent fallback on oversized SAN (bsc#1263712).
• CVE-2026-42014: pkcs11_write: fix UAF and leak in gnutls_pkcs11_token_set_pin (bsc#1263713).
• CVE-2026-42015: x509/pkcs12_bag: fix off-by-one in bag element bounds chec (bsc#1263714).

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

• openSUSE Leap 15.4
  zypper in -t patch SUSE-2026-2087=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-2087=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-2087=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-2087=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-2087=1
• SUSE Linux Enterprise Server 15 SP4 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-2087=1
• SUSE Linux Enterprise Server 15 SP5 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-2087=1
• SUSE Linux Enterprise Micro for Rancher 5.4
  zypper in -t patch SUSE-SLE-Micro-5.4-2026-2087=1
• SUSE Linux Enterprise Micro 5.4
  zypper in -t patch SUSE-SLE-Micro-5.4-2026-2087=1
• SUSE Linux Enterprise Micro 5.5
  zypper in -t patch SUSE-SLE-Micro-5.5-2026-2087=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-2087=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-2087=1

Package List:

• openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64 i586)
  • gnutls-guile-3.7.3-150400.4.59.1
  • libgnutlsxx28-3.7.3-150400.4.59.1
  • libgnutls-devel-3.7.3-150400.4.59.1
  • libgnutlsxx-devel-3.7.3-150400.4.59.1
  • gnutls-guile-debuginfo-3.7.3-150400.4.59.1
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • libgnutlsxx28-debuginfo-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• openSUSE Leap 15.4 (x86_64)
  • libgnutls30-32bit-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-32bit-3.7.3-150400.4.59.1
  • libgnutls-devel-32bit-3.7.3-150400.4.59.1
  • libgnutls30-hmac-32bit-3.7.3-150400.4.59.1
• openSUSE Leap 15.4 (aarch64_ilp32)
  • libgnutls30-64bit-3.7.3-150400.4.59.1
  • libgnutls30-64bit-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-hmac-64bit-3.7.3-150400.4.59.1
  • libgnutls-devel-64bit-3.7.3-150400.4.59.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
  • libgnutlsxx28-3.7.3-150400.4.59.1
  • libgnutls-devel-3.7.3-150400.4.59.1
  • libgnutlsxx-devel-3.7.3-150400.4.59.1
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • libgnutlsxx28-debuginfo-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (x86_64)
  • libgnutls30-32bit-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-32bit-3.7.3-150400.4.59.1
  • libgnutls30-hmac-32bit-3.7.3-150400.4.59.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
  • libgnutlsxx28-3.7.3-150400.4.59.1
  • libgnutls-devel-3.7.3-150400.4.59.1
  • libgnutlsxx-devel-3.7.3-150400.4.59.1
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • libgnutlsxx28-debuginfo-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (x86_64)
  • libgnutls30-32bit-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-32bit-3.7.3-150400.4.59.1
  • libgnutls30-hmac-32bit-3.7.3-150400.4.59.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
  • gnutls-guile-3.7.3-150400.4.59.1
  • libgnutlsxx28-3.7.3-150400.4.59.1
  • libgnutls-devel-3.7.3-150400.4.59.1
  • libgnutlsxx-devel-3.7.3-150400.4.59.1
  • gnutls-guile-debuginfo-3.7.3-150400.4.59.1
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • libgnutlsxx28-debuginfo-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (x86_64)
  • libgnutls30-32bit-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-32bit-3.7.3-150400.4.59.1
  • libgnutls30-hmac-32bit-3.7.3-150400.4.59.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
  • gnutls-guile-3.7.3-150400.4.59.1
  • libgnutlsxx28-3.7.3-150400.4.59.1
  • libgnutls-devel-3.7.3-150400.4.59.1
  • libgnutlsxx-devel-3.7.3-150400.4.59.1
  • gnutls-guile-debuginfo-3.7.3-150400.4.59.1
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • libgnutlsxx28-debuginfo-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (x86_64)
  • libgnutls30-32bit-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-32bit-3.7.3-150400.4.59.1
  • libgnutls30-hmac-32bit-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
  • libgnutlsxx28-3.7.3-150400.4.59.1
  • libgnutls-devel-3.7.3-150400.4.59.1
  • libgnutlsxx-devel-3.7.3-150400.4.59.1
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • libgnutlsxx28-debuginfo-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Server 15 SP4 LTSS (x86_64)
  • libgnutls30-32bit-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-32bit-3.7.3-150400.4.59.1
  • libgnutls30-hmac-32bit-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • gnutls-guile-3.7.3-150400.4.59.1
  • libgnutlsxx28-3.7.3-150400.4.59.1
  • libgnutls-devel-3.7.3-150400.4.59.1
  • libgnutlsxx-devel-3.7.3-150400.4.59.1
  • gnutls-guile-debuginfo-3.7.3-150400.4.59.1
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • libgnutlsxx28-debuginfo-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (x86_64)
  • libgnutls30-32bit-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-32bit-3.7.3-150400.4.59.1
  • libgnutls30-hmac-32bit-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64)
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64)
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
  • libgnutlsxx28-3.7.3-150400.4.59.1
  • libgnutls-devel-3.7.3-150400.4.59.1
  • libgnutlsxx-devel-3.7.3-150400.4.59.1
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • libgnutlsxx28-debuginfo-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (x86_64)
  • libgnutls30-32bit-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-32bit-3.7.3-150400.4.59.1
  • libgnutls30-hmac-32bit-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
  • gnutls-guile-3.7.3-150400.4.59.1
  • libgnutlsxx28-3.7.3-150400.4.59.1
  • libgnutls-devel-3.7.3-150400.4.59.1
  • libgnutlsxx-devel-3.7.3-150400.4.59.1
  • gnutls-guile-debuginfo-3.7.3-150400.4.59.1
  • gnutls-3.7.3-150400.4.59.1
  • gnutls-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-3.7.3-150400.4.59.1
  • libgnutls30-hmac-3.7.3-150400.4.59.1
  • libgnutlsxx28-debuginfo-3.7.3-150400.4.59.1
  • gnutls-debugsource-3.7.3-150400.4.59.1
  • libgnutls30-debuginfo-3.7.3-150400.4.59.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (x86_64)
  • libgnutls30-32bit-debuginfo-3.7.3-150400.4.59.1
  • libgnutls30-32bit-3.7.3-150400.4.59.1
  • libgnutls30-hmac-32bit-3.7.3-150400.4.59.1

References:

• https://www.suse.com/security/cve/CVE-2026-33845.html
• https://www.suse.com/security/cve/CVE-2026-33846.html
• https://www.suse.com/security/cve/CVE-2026-3833.html
• https://www.suse.com/security/cve/CVE-2026-42009.html
• https://www.suse.com/security/cve/CVE-2026-42010.html
• https://www.suse.com/security/cve/CVE-2026-42011.html
• https://www.suse.com/security/cve/CVE-2026-42012.html
• https://www.suse.com/security/cve/CVE-2026-42013.html
• https://www.suse.com/security/cve/CVE-2026-42014.html
• https://www.suse.com/security/cve/CVE-2026-42015.html
• https://www.suse.com/security/cve/CVE-2026-5260.html
• https://bugzilla.suse.com/show_bug.cgi?id=1263704
• https://bugzilla.suse.com/show_bug.cgi?id=1263705
• https://bugzilla.suse.com/show_bug.cgi?id=1263707
• https://bugzilla.suse.com/show_bug.cgi?id=1263708
• https://bugzilla.suse.com/show_bug.cgi?id=1263709
• https://bugzilla.suse.com/show_bug.cgi?id=1263710
• https://bugzilla.suse.com/show_bug.cgi?id=1263711
• https://bugzilla.suse.com/show_bug.cgi?id=1263712
• https://bugzilla.suse.com/show_bug.cgi?id=1263713
• https://bugzilla.suse.com/show_bug.cgi?id=1263714
• https://bugzilla.suse.com/show_bug.cgi?id=1263715