SUSE-SU-2026:24359-1: important: Security update for go1.26

[SLE-SECURITY-UPDATES]

# Security update for go1.26

Announcement ID: SUSE-SU-2026:24359-1  
Release Date: 2026-10-21T21:25:38Z  
Rating: important  
References:

  * bsc#1255111
  * bsc#1284770
  * bsc#1284772
  * bsc#1286261
  * bsc#1286317

  
Cross-References:

  * CVE-2026-111943
  * CVE-2026-78663
  * CVE-2026-78669

  
CVSS scores:

  * CVE-2026-111943 ( SUSE ):  7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-78663 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-78663 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
  * CVE-2026-78669 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78669 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves three vulnerabilities and has two fixes can now be
installed.

## Description:

This update for go1.26 fixes the following issues:

Update to go 1.26.10 (bsc#1255111):

  * CVE-2026-78663: net/http: double flow control refund on HTTP/2 server
    streams (bsc#1284770).
  * CVE-2026-78669: net/http: excessive CPU consumption from repeated initial
    window changes (bsc#1284772).
  * CVE-2026-111943: crypto/x509: mitigation for security concerns with a
    specific Certificate Authority (bsc#1286317, bsc#1286261).

## 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 Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-1956

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-1956

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * go1.26-race-1.26.10-160000.1.1
    * go1.26-1.26.10-160000.1.1
    * go1.26-doc-1.26.10-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * go1.26-race-1.26.10-160000.1.1
    * go1.26-1.26.10-160000.1.1
    * go1.26-doc-1.26.10-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-111943.html
  * https://www.suse.com/security/cve/CVE-2026-78663.html
  * https://www.suse.com/security/cve/CVE-2026-78669.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1255111
  * https://bugzilla.suse.com/show_bug.cgi?id=1284770
  * https://bugzilla.suse.com/show_bug.cgi?id=1284772
  * https://bugzilla.suse.com/show_bug.cgi?id=1286261
  * https://bugzilla.suse.com/show_bug.cgi?id=1286317

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