SUSE-SU-2026:22836-1: important: Security update for radvd

[SLE-SECURITY-UPDATES]

# Security update for radvd

Announcement ID: SUSE-SU-2026:22836-1  
Release Date: 2026-07-21T15:16:48Z  
Rating: important  
References:

  * bsc#1268641

  
Cross-References:

  * CVE-2026-48715

  
CVSS scores:

  * CVE-2026-48715 ( SUSE ):  7.5 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-48715 ( NVD ):  7.7
    CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/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
  * CVE-2026-48715 ( NVD ):  8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

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

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for radvd fixes the following issue

  * CVE-2026-48715: crafted ICMPv6 Router Advertisement can lead to a stack-
    based buffer overflow (bsc#1268641).

Changes for radvd:

  * Update to version 2.21.
  * feat: RFC8319 support: Increase max AdvDefaultLifetime and
    MaxRtrAdvInterval.
  * feat: Add DHCPv6-PD preferred flag.
  * fix: improve file checks for procfs knobs.
  * feat: allow libc strlcpy.
  * fix: make libcheck fatal if missing with --with-check.
  * refactor: make drop_root_privileges reusable.
  * fix: support incoming jumbo packets.
  * Avoid libbsd header with libc strlcpy.

## 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 16.0  
    zypper in -t patch SUSE-SLES-16.0-1310=1

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-1310=1

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * radvd-debugsource-2.21-160000.1.1
    * radvd-debuginfo-2.21-160000.1.1
    * radvd-2.21-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * radvd-debugsource-2.21-160000.1.1
    * radvd-debuginfo-2.21-160000.1.1
    * radvd-2.21-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-48715.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1268641

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