ESB-2026.5740

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.5740 Security update for samba 27 May 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: samba Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-1933 CVE-2026-2340 CVE-2026-3012 CVE-2026-3238 CVE-2026-4408 CVE-2026-4480 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20262076-1 Comment: CVSS (Max): 10.0 CVE-2026-4480 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H) CVSS Source: SUSE Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H EPSS (Max): None available when published - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for samba Announcement ID: SUSE-SU-2026:2076-1 Release Date: 2026-05-26T12:36:52Z Rating: critical o bsc#1255755 o bsc#1257200 o bsc#1259441 o bsc#1261158 References: o bsc#1261159 o bsc#1261160 o bsc#1261161 o bsc#1261163 o bsc#1261188 o CVE-2026-1933 o CVE-2026-2340 o CVE-2026-3012 Cross-References: o CVE-2026-3238 o CVE-2026-4408 o CVE-2026-4480 o CVE-2026-1933 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/ UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N o CVE-2026-1933 ( SUSE ): 7.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/ S:U/C:N/I:L/A:H o CVE-2026-2340 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/ UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N o CVE-2026-2340 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/ S:U/C:N/I:H/A:N o CVE-2026-3012 ( SUSE ): 7.6 CVSS:4.0/AV:A/AC:H/AT:P/PR:N/ UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N o CVE-2026-3012 ( SUSE ): 8.0 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/ S:C/C:H/I:H/A:N CVSS scores: o CVE-2026-3238 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H o CVE-2026-4408 ( SUSE ): 9.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/ UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H o CVE-2026-4408 ( SUSE ): 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/ S:C/C:H/I:H/A:H o CVE-2026-4480 ( SUSE ): 10.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N /UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H o CVE-2026-4480 ( SUSE ): 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N /S:C/C:H/I:H/A:H o CVE-2026-4480 ( NVD ): 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/ S:C/C:H/I:H/A:H o Basesystem Module 15-SP7 o SUSE Linux Enterprise Desktop 15 SP7 Affected o SUSE Linux Enterprise High Availability Extension 15 SP7 Products: o SUSE Linux Enterprise Real Time 15 SP7 o SUSE Linux Enterprise Server 15 SP7 o SUSE Linux Enterprise Server for SAP Applications 15 SP7 An update that solves six vulnerabilities and has three security fixes can now be installed. Description: This update for samba fixes the following issues Security issues: o CVE-2026-1933: Missing access check on reparse point operations (bsc# 1261188). o CVE-2026-2340: vfs_worm does not block directory modification (bsc# 1261158). o CVE-2026-3012: group policy certificate enrollment uses http: // without validation (bsc#1261159). o CVE-2026-3238: unauthenticated udp packet crashes AD DC nbt server (bsc# 1261160). o CVE-2026-4408: Remote Code Execution in SAMR (bsc#1261163). o CVE-2026-4480: Unauthenticated Remote Code Execution (bsc#1261161). Non security issue: o network:samba:STABLE/samba: "use-kerberos=desired" broken / Dolphin requires login for Samba shares (bsc#1255755). o Generated dynamic profile based on path to special 'printers' share. (bsc# 1259441). o Fix regression "use-kerberos=desired" broken doesn't even try to authenticate with kerberos and instead fallsback to NTLM (bsc#1255755). o Fix memory leak using cups parsed options and filename allocated when processing end of printing job (bsc#1257200). o Fix manpage for "net offlinejoin requestodj". o Fix "ctdbd socket" documentation in manpage for smb.conf o Fix rpc workers with long living clients from growing server memory keytab and increasing memory used by workers (bsc#1257200). 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: o Basesystem Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2076=1 o SUSE Linux Enterprise High Availability Extension 15 SP7 zypper in -t patch SUSE-SLE-Product-HA-15-SP7-2026-2076=1 Package List: o Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64) samba-winbind-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-libs-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-dcerpc-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-client-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-dcerpc-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-winbind-libs-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-client-libs-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 python3-ldb-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-tool-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-client-libs-4.21.10+git.501.277ba349a01-150700.3.26.1 libldb-devel-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-gpupdate-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-libs-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-debugsource-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-libs-python3-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-libs-python3-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-winbind-libs-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-devel-4.21.10+git.501.277ba349a01-150700.3.26.1 ldb-tools-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-python3-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-ldb-ldap-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-ldb-ldap-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 ldb-tools-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-client-4.21.10+git.501.277ba349a01-150700.3.26.1 libldb2-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-python3-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-4.21.10+git.501.277ba349a01-150700.3.26.1 python3-ldb-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-winbind-4.21.10+git.501.277ba349a01-150700.3.26.1 libldb2-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 o Basesystem Module 15-SP7 (aarch64 x86_64) samba-ceph-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-ceph-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 o Basesystem Module 15-SP7 (x86_64) libldb2-32bit-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-winbind-libs-32bit-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 libldb2-32bit-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-libs-32bit-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-libs-32bit-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-client-libs-32bit-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-winbind-libs-32bit-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-client-libs-32bit-4.21.10+git.501.277ba349a01-150700.3.26.1 o SUSE Linux Enterprise High Availability Extension 15 SP7 (aarch64 ppc64le s390x x86_64) samba-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 samba-debugsource-4.21.10+git.501.277ba349a01-150700.3.26.1 ctdb-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1 ctdb-4.21.10+git.501.277ba349a01-150700.3.26.1 References: o https://www.suse.com/security/cve/CVE-2026-1933.html o https://www.suse.com/security/cve/CVE-2026-2340.html o https://www.suse.com/security/cve/CVE-2026-3012.html o https://www.suse.com/security/cve/CVE-2026-3238.html o https://www.suse.com/security/cve/CVE-2026-4408.html o https://www.suse.com/security/cve/CVE-2026-4480.html o https://bugzilla.suse.com/show_bug.cgi?id=1255755 o https://bugzilla.suse.com/show_bug.cgi?id=1257200 o https://bugzilla.suse.com/show_bug.cgi?id=1259441 o https://bugzilla.suse.com/show_bug.cgi?id=1261158 o https://bugzilla.suse.com/show_bug.cgi?id=1261159 o https://bugzilla.suse.com/show_bug.cgi?id=1261160 o https://bugzilla.suse.com/show_bug.cgi?id=1261161 o https://bugzilla.suse.com/show_bug.cgi?id=1261163 o https://bugzilla.suse.com/show_bug.cgi?id=1261188 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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