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openSUSE krb5 Important Integer Underflow Fix Vulnerability CVE-2026-11850

opensuse
Calendar Grey July 10, 2026
Dist Opensuse Esm H88
Enhance your security posture by updating krb5 on openSUSE to fix the integer underflow issue detailed in this advisory.
An update that solves one vulnerability can now be installed.

Description

This update for krb5 fixes the following issue

* CVE-2026-11850: integer underflow in berval2tl_data() leads to heap out-of-

bounds read (bsc#1268131).

Topics%20covered

Topics Covered

security advisory important integer underflow OpenSUSE heap out-of-bounds CVE-2026-11850

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:

* SUSE Linux Enterprise Micro 5.5

zypper in -t patch SUSE-SLE-Micro-5.5-2026-2847=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5

zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-2847=1

* SUSE Linux Enterprise Server 15 SP5 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-2847=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP5

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-2847=1

* openSUSE Leap 15.5

zypper in -t patch SUSE-2026-2847=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5

zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-2847=1

Package List

* SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)

* krb5-devel-1.20.1-150500.3.23.1

* krb5-plugin-kdb-ldap-1.20.1-150500.3.23.1

* krb5-client-debuginfo-1.20.1-150500.3.23.1

* krb5-server-debuginfo-1.20.1-150500.3.23.1

* krb5-plugin-preauth-pkinit-1.20.1-150500.3.23.1

* krb5-plugin-preauth-otp-1.20.1-150500.3.23.1

* krb5-client-1.20.1-150500.3.23.1

* krb5-plugin-kdb-ldap-debuginfo-1.20.1-150500.3.23.1

* krb5-plugin-preauth-otp-debuginfo-1.20.1-150500.3.23.1

* krb5-1.20.1-150500.3.23.1

* krb5-debugsource-1.20.1-150500.3.23.1

* krb5-plugin-preauth-pkinit-debuginfo-1.20.1-150500.3.23.1

* krb5-debuginfo-1.20.1-150500.3.23.1

* krb5-server-1.20.1-150500.3.23.1

* SUSE Linux Enterprise Server 15 SP5 LTSS (x86_64)

* krb5-32bit-debuginfo-1.20.1-150500.3.23.1

* krb5-32bit-1.20.1-150500.3.23.1

* openSUSE Leap 15.5 (aarch64 i586 ppc64le s390x x86_64)

* krb5-client-1.20.1-150500.3.23.1

* krb5-plugin-kdb-ldap-debuginfo-1.20.1-150500.3.23.1

* krb5-plugin-kdb-ldap-1.20.1-150500.3.23.1

*...

Read the Full Advisory

References

* bsc#1268131

## References:

* https://www.suse.com/security/cve/CVE-2026-11850.html

* https://bugzilla.suse.com/show_bug.cgi?id=1268131

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2847-1
Release Date: 2026-07-10T11:38:37Z
Affected Products: * openSUSE Leap 15.5 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 * SUSE Linux Enterprise Micro 5.5 * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server 15 SP5 LTSS * SUSE Linux Enterprise Server for SAP Applications 15 SP5

Topics%20covered

Topics Covered

security advisory important integer underflow OpenSUSE heap out-of-bounds CVE-2026-11850

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