SUSE-SU-2026:2848-1: important: Security update for krb5, krb5-mini

OPENSUSE-SECURITY-UPDATES <[email protected]>
Newsgroups gmane.linux.suse.security.announce
Message-ID <178370101870.1235.2552038314833287923@aaee731399ed> 
# Security update for krb5, krb5-mini

Announcement ID: SUSE-SU-2026:2848-1  
Release Date: 2026-07-10T11:39:12Z  
Rating: important  
References:

  * bsc#1263366
  * bsc#1263367
  * bsc#1268131

  
Cross-References:

  * CVE-2026-11850
  * CVE-2026-40355
  * CVE-2026-40356

  
CVSS scores:

  * CVE-2026-11850 ( SUSE ):  5.9 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-11850 ( NVD ):  5.0 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-40355 ( SUSE ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-40355 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-40355 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-40356 ( SUSE ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-40356 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-40356 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * Basesystem Module 15-SP7
  * openSUSE Leap 15.6
  * Server Applications Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP6 LTSS
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves three vulnerabilities can now be installed.

## Description:

This update for krb5, krb5-mini fixes the following issues

  * CVE-2026-11850: integer underflow in berval2tl_data() leads to heap out-of-
    bounds read (bsc#1268131).
  * CVE-2026-40355: Denial of Service via NULL pointer dereference in NegoEx
    mechanism (bsc#1263366).
  * CVE-2026-40356: Denial of Service via integer underflow and out-of-bounds
    read (bsc#1263367).

## 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:

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2848=1

  * Server Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-2848=1

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2026-2848=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-2848=1

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2848=1

## Package List:

  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * krb5-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-pkinit-debuginfo-1.20.1-150600.11.19.1
    * krb5-debugsource-1.20.1-150600.11.19.1
    * krb5-devel-1.20.1-150600.11.19.1
    * krb5-client-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-pkinit-1.20.1-150600.11.19.1
    * krb5-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-otp-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-otp-debuginfo-1.20.1-150600.11.19.1
    * krb5-client-debuginfo-1.20.1-150600.11.19.1
  * Basesystem Module 15-SP7 (x86_64)
    * krb5-32bit-debuginfo-1.20.1-150600.11.19.1
    * krb5-32bit-1.20.1-150600.11.19.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
    * krb5-plugin-preauth-pkinit-debuginfo-1.20.1-150600.11.19.1
    * krb5-1.20.1-150600.11.19.1
    * krb5-debugsource-1.20.1-150600.11.19.1
    * krb5-devel-1.20.1-150600.11.19.1
    * krb5-server-debuginfo-1.20.1-150600.11.19.1
    * krb5-client-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-pkinit-1.20.1-150600.11.19.1
    * krb5-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-otp-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-otp-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-kdb-ldap-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-kdb-ldap-1.20.1-150600.11.19.1
    * krb5-server-1.20.1-150600.11.19.1
    * krb5-client-debuginfo-1.20.1-150600.11.19.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (x86_64)
    * krb5-32bit-debuginfo-1.20.1-150600.11.19.1
    * krb5-32bit-1.20.1-150600.11.19.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
    * krb5-plugin-preauth-pkinit-debuginfo-1.20.1-150600.11.19.1
    * krb5-1.20.1-150600.11.19.1
    * krb5-debugsource-1.20.1-150600.11.19.1
    * krb5-devel-1.20.1-150600.11.19.1
    * krb5-client-1.20.1-150600.11.19.1
    * krb5-server-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-pkinit-1.20.1-150600.11.19.1
    * krb5-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-otp-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-otp-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-kdb-ldap-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-kdb-ldap-1.20.1-150600.11.19.1
    * krb5-server-1.20.1-150600.11.19.1
    * krb5-client-debuginfo-1.20.1-150600.11.19.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (x86_64)
    * krb5-32bit-debuginfo-1.20.1-150600.11.19.1
    * krb5-32bit-1.20.1-150600.11.19.1
  * openSUSE Leap 15.6 (aarch64 i586 ppc64le s390x x86_64)
    * krb5-1.20.1-150600.11.19.1
    * krb5-debugsource-1.20.1-150600.11.19.1
    * krb5-debuginfo-1.20.1-150600.11.19.1
    * krb5-mini-devel-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-otp-1.20.1-150600.11.19.1
    * krb5-plugin-kdb-ldap-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-kdb-ldap-1.20.1-150600.11.19.1
    * krb5-client-debuginfo-1.20.1-150600.11.19.1
    * krb5-devel-1.20.1-150600.11.19.1
    * krb5-mini-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-spake-1.20.1-150600.11.19.1
    * krb5-server-debuginfo-1.20.1-150600.11.19.1
    * krb5-client-1.20.1-150600.11.19.1
    * krb5-server-1.20.1-150600.11.19.1
    * krb5-mini-debugsource-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-pkinit-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-spake-debuginfo-1.20.1-150600.11.19.1
    * krb5-mini-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-pkinit-1.20.1-150600.11.19.1
    * krb5-plugin-preauth-otp-debuginfo-1.20.1-150600.11.19.1
  * openSUSE Leap 15.6 (x86_64)
    * krb5-devel-32bit-1.20.1-150600.11.19.1
    * krb5-32bit-1.20.1-150600.11.19.1
    * krb5-32bit-debuginfo-1.20.1-150600.11.19.1
  * openSUSE Leap 15.6 (aarch64_ilp32)
    * krb5-64bit-debuginfo-1.20.1-150600.11.19.1
    * krb5-64bit-1.20.1-150600.11.19.1
    * krb5-devel-64bit-1.20.1-150600.11.19.1
  * Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * krb5-debugsource-1.20.1-150600.11.19.1
    * krb5-server-debuginfo-1.20.1-150600.11.19.1
    * krb5-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-kdb-ldap-debuginfo-1.20.1-150600.11.19.1
    * krb5-plugin-kdb-ldap-1.20.1-150600.11.19.1
    * krb5-server-1.20.1-150600.11.19.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-11850.html
  * https://www.suse.com/security/cve/CVE-2026-40355.html
  * https://www.suse.com/security/cve/CVE-2026-40356.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1263366
  * https://bugzilla.suse.com/show_bug.cgi?id=1263367
  * https://bugzilla.suse.com/show_bug.cgi?id=1268131
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