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OpenSUSE 15.6 OpenSSL-3 Critical Buffer Overflow Vulnerabilities Found

suse
Calendar Grey April 8, 2026
Dist Suse Esm H88
Critical update for openssl-3 on SUSE addresses multiple important security issues affecting various server versions.
An update that solves five vulnerabilities can now be installed.

Summary

## This update for openssl-3 fixes the following issues: * CVE-2026-28387: Potential use-after-free in DANE client code (bsc#1260441). * CVE-2026-28388: NULL Pointer Dereference When Processing a Delta CRL (bsc#1260442). * CVE-2026-28389: Possible NULL dereference when processing CMS KeyAgreeRecipientInfo (bsc#1260443). * CVE-2026-31789: Heap buffer overflow in hexadecimal conversion (bsc#1260444). * CVE-2026-31790: Incorrect failure handling in RSA KEM RSASVE encapsulation (bsc#1260445). ## 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 15.6 zypper in -t patch SUSE-2026-1215=1 openSUSE-SLE-15.6-2026-1215=1

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important use-after-free openssl-3

References

* bsc#1260441

* bsc#1260442

* bsc#1260443

* bsc#1260444

* bsc#1260445

Cross-

* CVE-2026-28387

* CVE-2026-28388

* CVE-2026-28389

* CVE-2026-31789

* CVE-2026-31790

CVSS scores:

* CVE-2026-28387 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

* CVE-2026-28389 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

* CVE-2026-31789 ( SUSE ): 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

* CVE-2026-31790 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

* CVE-2026-31790 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Products:

* openSUSE Leap 15.6

* SUSE Linux Enterprise Server 15 SP6

* SUSE Linux Enterprise Server 15 SP6 LTSS

* SUSE Linux Enterprise Server for SAP Applications 15 SP6

An update that solves five vulnerabilities can now be installed.

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1215-1
Release Date: 2026-04-08T12:28:03Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important use-after-free openssl-3

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