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openSUSE krb5 Significant Denial of Service Vulnerabilities 2026-2848-1

opensuse
Calendar Grey July 10, 2026
Dist Opensuse Esm H88
# Security update for krb5, krb5-mini Announcement ID: SUSE-SU-2026:2848-1 Release Date: 2026-07-10T
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).

Topics%20covered

Topics Covered

security advisory denial of service update important krb5 OpenSUSE

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:

* 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

*...

Read the Full Advisory

References

* bsc#1263366

* bsc#1263367

* bsc#1268131

## 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

Severity
important
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

security advisory denial of service update important krb5 OpenSUSE

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