Security update for gnutls

Announcement ID:	SUSE-SU-2026:2366-1
Release Date:	2026-06-11T09:12:43Z
Rating:	important
References:	bsc#1263704 bsc#1263705 bsc#1263708
Cross-References:	CVE-2026-33845 CVE-2026-33846 CVE-2026-42009
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 ): 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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-2026-33846 ( 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-2026-42009 ( 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
Affected Products:	SUSE Linux Enterprise High Performance Computing 12 SP5 SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server 12 SP5 LTSS SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security SUSE Linux Enterprise Server for SAP Applications 12 SP5

An update that solves three vulnerabilities can now be installed.

Description:

This update for gnutls fixes the following issues

• 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).

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:

• SUSE Linux Enterprise Server 12 SP5 LTSS
  zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-2366=1
• SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2366=1

Package List:

• SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • libgnutls30-3.4.17-8.23.1
  • libgnutls30-debuginfo-3.4.17-8.23.1
• SUSE Linux Enterprise Server 12 SP5 LTSS (ppc64le s390x x86_64)
  • gnutls-debugsource-3.4.17-8.23.1
• SUSE Linux Enterprise Server 12 SP5 LTSS (s390x x86_64)
  • libgnutls30-debuginfo-32bit-3.4.17-8.23.1
  • libgnutls30-32bit-3.4.17-8.23.1
• SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
  • libgnutls30-3.4.17-8.23.1
  • libgnutls30-32bit-3.4.17-8.23.1
  • libgnutls30-debuginfo-3.4.17-8.23.1
  • libgnutls30-debuginfo-32bit-3.4.17-8.23.1
  • gnutls-debugsource-3.4.17-8.23.1

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-2026-42009.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=1263708