SUSE-SU-2026:3868-1: moderate: Security update for quagga

[SLE-SECURITY-UPDATES]

# Security update for quagga

Announcement ID: SUSE-SU-2026:3868-1  
Release Date: 2026-08-28T17:33:09Z  
Rating: moderate  
References:

  * bsc#1263974

  
Cross-References:

  * CVE-2026-37458

  
CVSS scores:

  * CVE-2026-37458 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-37458 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-37458 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for quagga fixes the following issue:

  * CVE-2026-37458: missing input validation in the `MP_REACH_NLRI` component
    allows authenticated attackers to cause a DoS via a crafted UPDATE message
    (bsc#1263974).

## 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 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-3868=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * libfpm_pb0-1.1.1-17.16.1
    * libospf0-debuginfo-1.1.1-17.16.1
    * libzebra1-1.1.1-17.16.1
    * quagga-debuginfo-1.1.1-17.16.1
    * libospfapiclient0-1.1.1-17.16.1
    * libquagga_pb0-1.1.1-17.16.1
    * libquagga_pb0-debuginfo-1.1.1-17.16.1
    * libfpm_pb0-debuginfo-1.1.1-17.16.1
    * libospf0-1.1.1-17.16.1
    * libzebra1-debuginfo-1.1.1-17.16.1
    * quagga-devel-1.1.1-17.16.1
    * quagga-1.1.1-17.16.1
    * libospfapiclient0-debuginfo-1.1.1-17.16.1
    * quagga-debugsource-1.1.1-17.16.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-37458.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1263974

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