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openSUSE 16 Security Update : radvd (openSUSE-SU-2026:21400-1)

high Nessus Plugin ID 329302

Synopsis

The remote openSUSE host is missing a security update.

Description

The remote openSUSE 16 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2026:21400-1 advisory.

 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.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected radvd package.

See Also

https://bugzilla.suse.com/1268641

https://www.suse.com/security/cve/CVE-2026-48715

Plugin Details

Severity: High

ID: 329302

File Name: openSUSE-2026-21400-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/24/2026

Updated: 7/24/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.13

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

Vector: CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-48715

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.7

Threat Score: 5.2

Threat Vector: CVSS:4.0/E:U

Vector: 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

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:radvd

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/21/2026

Vulnerability Publication Date: 6/8/2026

Reference Information

CVE: CVE-2026-48715