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Alerts This Week
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SUSE Important Security Update for krb5 Denial of Service Vuln 2026-2848-1

suse
Calendar Grey July 10, 2026
Dist Suse Esm H88
Important SUSE security update for krb5 and krb5-mini addresses multiple vulnerabilities and recommends immediate patching.
An update that solves three vulnerabilities can now be installed.

Summary

## 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

Topics%20covered

Topics Covered

security advisory denial of service SuSE vulnerability important krb5

References

* bsc#1263366

* bsc#1263367

* bsc#1268131

Cross-

* 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

Severity
important
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

security advisory denial of service SuSE vulnerability important krb5

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