SUSE-SU-2026:23745-1: important: Security update for google-guest-agent

[SLE-SECURITY-UPDATES]

# Security update for google-guest-agent

Announcement ID: SUSE-SU-2026:23745-1  
Release Date: 2026-09-17T07:25:20Z  
Rating: important  
References:

  * bsc#1260264
  * bsc#1278597

  
Cross-References:

  * CVE-2026-33186
  * CVE-2026-56854
  * CVE-2026-56855
  * CVE-2026-78662

  
CVSS scores:

  * CVE-2026-33186 ( SUSE ):  8.6
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-33186 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-33186 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-33186 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-56854 ( SUSE ):  8.6
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-56854 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-56854 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-56855 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-56855 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-56855 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78662 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-78662 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-78662 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

  
Affected Products:

  * SUSE Linux Micro 6.1

  
  
An update that solves four vulnerabilities can now be installed.

## Description:

This update for google-guest-agent fixes the following issues:

  * CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper
    validation of the HTTP/2 :path pseudo- header (bsc#1260264).
  * CVE-2026-56854,CVE-2026-56855,CVE-2026-78662: golang.org/x/crypto/ssh:
    authentication bypass and deadlocks in the crypto/ssh library (bsc#1278597).

## 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 Micro 6.1  
    zypper in -t patch SUSE-SLE-Micro-6.1-736

## Package List:

  * SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64)
    * google-guest-agent-20260903.01-slfo.1.1_2.1
    * google-guest-agent-debuginfo-20260903.01-slfo.1.1_2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-33186.html
  * https://www.suse.com/security/cve/CVE-2026-56854.html
  * https://www.suse.com/security/cve/CVE-2026-56855.html
  * https://www.suse.com/security/cve/CVE-2026-78662.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1260264
  * https://bugzilla.suse.com/show_bug.cgi?id=1278597

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.suse.com/pipermail/sle-security-updates/attachments/20260921/85cd3eaf/attachment.htm>