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openSUSE Samba Serious Remote Code Execution Flaw SUSE-SU-2026-2108-1

opensuse
Calendar Grey May 29, 2026
Dist Opensuse Esm H88
Critical security update for openSUSE Samba addressing remote code execution vulnerabilities. Install patches immediately.
An update that solves four vulnerabilities and has one security fix can now be installed.

Description

This update for samba fixes the following issues

* CVE-2026-2340: vfs_worm does not block directory modification (bsc#1261158).

* CVE-2026-3238: unauthenticated udp packet crashes AD DC nbt server

(bsc#1261160).

* CVE-2026-4408: Remote Code Execution in SAMR (bsc#1261163).

* CVE-2026-4480: Unauthenticated Remote Code Execution (bsc#1261161).

Non security issues:

* Fix pthreadpool_tevent race conditions accessing both

pthreadpool_tevent.jobs list and pthreadpool_tevent.glue_list (bsc#1252963)

Topics%20covered

Topics Covered

security advisory critical remote code execution samba OpenSUSE CVE

Patch

## 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-2026-2108=1

* SUSE Linux Enterprise Micro for Rancher 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-2108=1

* SUSE Linux Enterprise Micro 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-2108=1

* SUSE Linux Enterprise High Availability Extension 15 SP4

zypper in -t patch SUSE-SLE-Product-HA-15-SP4-2026-2108=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4

zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-2108=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4

zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-2108=1

* SUSE Linux Enterprise Micro for Rancher 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-2108=1

* SUSE Linux Enterprise Micro 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-2108=1

* SUSE Linux Enterprise...

Read the Full Advisory

Package List

* openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64 i586)

* samba-dsdb-modules-debuginfo-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-winbind-libs-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-client-libs-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-debuginfo-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-test-debuginfo-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-client-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* ctdb-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* ctdb-pcp-pmda-debuginfo-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-libs-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-winbind-debuginfo-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-ad-dc-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* ctdb-pcp-pmda-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-python3-debuginfo-4.15.13+git.780.d2f53cbcded-150400.3.49.1

* samba-libs-python3-debuginfo-4.15.13+git.780.d2f53cbcded-150400.3.49.1

*...

Read the Full Advisory

References

* bsc#1252963

* bsc#1261158

* bsc#1261160

* bsc#1261161

* bsc#1261163

## References:

* https://www.suse.com/security/cve/CVE-2026-2340.html

* https://www.suse.com/security/cve/CVE-2026-3238.html

* https://www.suse.com/security/cve/CVE-2026-4408.html

* https://www.suse.com/security/cve/CVE-2026-4480.html

* https://bugzilla.suse.com/show_bug.cgi?id=1252963

* https://bugzilla.suse.com/show_bug.cgi?id=1261158

* https://bugzilla.suse.com/show_bug.cgi?id=1261160

* https://bugzilla.suse.com/show_bug.cgi?id=1261161

* https://bugzilla.suse.com/show_bug.cgi?id=1261163

Severity
critical
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2108-1
Release Date: 2026-05-29T07:20:16Z
Affected Products: * openSUSE Leap 15.4 * SUSE Linux Enterprise High Availability Extension 15 SP4 * SUSE Linux Enterprise High Performance Computing 15 SP4 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro for Rancher 5.3 * 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 for SAP Applications 15 SP4 * SUSE Manager Proxy 4.3 * SUSE Manager Retail Branch Server 4.3 * SUSE Manager Server 4.3

Topics%20covered

Topics Covered

security advisory critical remote code execution samba OpenSUSE CVE

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