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SUSE radvd Important DoS Buffer Overflow Advisory 2026-22836-1

suse
Calendar Grey July 27, 2026
Scroller Suse
SUSE has released a security update for radvd addressing a critical buffer overflow risk found in ICMPv6 Router Ads.
A security update for radvd addresses CVE-2026-48715, which fixes a stack-based buffer overflow

Summary

## 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

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important radvd CVE-2026-48715

References

* bsc#1268641

Cross-

* 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.

##

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

* https://bugzilla.suse.com/show_bug.cgi?id=1268641

Severity
important
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important radvd CVE-2026-48715

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