SUSE-SU-2026:3577-1: important: Security update for snpguest

# Security update for snpguest

Announcement ID: SUSE-SU-2026:3577-1  
Release Date: 2026-08-11T11:53:28Z  
Rating: important  
References:

  * bsc#1270527
  * bsc#1270642
  * bsc#1274139

  
Cross-References:

  * CVE-2026-25541
  * CVE-2026-41678
  * CVE-2026-42327

  
CVSS scores:

  * CVE-2026-25541 ( 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-2026-25541 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-25541 ( NVD ):  5.5
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-25541 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-41678 ( SUSE ):  8.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-41678 ( SUSE ):  7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
  * CVE-2026-41678 ( NVD ):  7.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-41678 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-42327 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-42327 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-42327 ( NVD ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

  
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 three vulnerabilities can now be installed.

## Description:

This update for snpguest fixes the following issues:

  * CVE-2026-25541: bytes: integer overflow in 'BytesMut:reserve' can lead to
    undefined behavior and crashes (bsc#1274139).
  * CVE-2026-41678: openssl: incorrect bounds assertion in AES keywrap can lead
    to an out-of-bounds write (bsc#1270642).
  * CVE-2026-42327: openssl: missing validation when processing certificates
    with non-UTF-8 OCSP URLs can lead to undefined behavior (bsc#1270527).

## 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 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3577=1

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2026-3577=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-3577=1

## Package List:

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (x86_64)
    * snpguest-0.3.2-150600.3.14.1
    * snpguest-debuginfo-0.3.2-150600.3.14.1
  * openSUSE Leap 15.6 (x86_64)
    * snpguest-0.3.2-150600.3.14.1
    * snpguest-debugsource-0.3.2-150600.3.14.1
    * snpguest-debuginfo-0.3.2-150600.3.14.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (x86_64)
    * snpguest-0.3.2-150600.3.14.1
    * snpguest-debuginfo-0.3.2-150600.3.14.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-25541.html
  * https://www.suse.com/security/cve/CVE-2026-41678.html
  * https://www.suse.com/security/cve/CVE-2026-42327.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1270527
  * https://bugzilla.suse.com/show_bug.cgi?id=1270642
  * https://bugzilla.suse.com/show_bug.cgi?id=1274139