SUSE-SU-2026:21793-1: important: Security update for alloy

[SLE-UPDATES]

# Security update for alloy

Announcement ID: SUSE-SU-2026:21793-1  
Release Date: 2026-05-14T15:06:27Z  
Rating: important  
References:

  * bsc#1258099
  * bsc#1258609
  * bsc#1259919
  * bsc#1260317
  * jsc#PED-14815

  
Cross-References:

  * CVE-2026-25934
  * CVE-2026-26958
  * CVE-2026-33186
  * CVE-2026-4427

  
CVSS scores:

  * CVE-2026-25934 ( SUSE ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-25934 ( SUSE ):  4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
  * CVE-2026-25934 ( NVD ):  4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
  * CVE-2026-25934 ( NVD ):  4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
  * CVE-2026-26958 ( SUSE ):  8.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-26958 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
  * CVE-2026-26958 ( NVD ):  1.7
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/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-2026-33186 ( 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-2026-4427 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-4427 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4427 ( 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 four vulnerabilities and contains one feature can now be
installed.

## Description:

This update for alloy fixes the following issues

Security issues:

  * CVE-2026-4427: github.com/jackc/pgproto3/v2: improper validation of field
    length allows a malicious PostgreSQL server to crash a client application
    via a DataRow message (bsc#1259919).
  * CVE-2026-25934: github.com/go-git/go-git/v5: improper verification of data
    integrity values for .pack and .idx files can lead to the consumption of
    corrupted files (bsc#1258099).
  * CVE-2026-26958: filippo.io/edwards25519: failure to initialize receiver in
    MultiScalarMult can produce invalid results and lead to undefined behavior
    (bsc#1258609).
  * CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper
    validation of the HTTP/2: path pseudo- header (bsc#1260317).

Non security issue:

  * Updated to 1.16.0
  * Use systemd tmpfiles.d to create /var/lib/alloy hierarchy (jsc#PED-14815)

## 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-16.0-747=1

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-747=1

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * alloy-1.16.0-160000.1.1
    * alloy-debuginfo-1.16.0-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * alloy-1.16.0-160000.1.1
    * alloy-debuginfo-1.16.0-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-25934.html
  * https://www.suse.com/security/cve/CVE-2026-26958.html
  * https://www.suse.com/security/cve/CVE-2026-33186.html
  * https://www.suse.com/security/cve/CVE-2026-4427.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1258099
  * https://bugzilla.suse.com/show_bug.cgi?id=1258609
  * https://bugzilla.suse.com/show_bug.cgi?id=1259919
  * https://bugzilla.suse.com/show_bug.cgi?id=1260317
  * https://jira.suse.com/browse/PED-14815

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