OPENSUSE-SU-2026:21400-1

Vulnerability from csaf_opensuse - Published: 2026-07-21 15:16 - Updated: 2026-09-17 17:39
Summary
Security update for radvd
Severity
Important
Notes
Title of the patch: Security update for radvd
Description of the patch: 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.
Patchnames: openSUSE-Leap-16.0-1310
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2026-48715
7.5 (High)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: openSUSE Leap 16.0:radvd-0:2.21-160000.1.1.aarch64 —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:radvd-0:2.21-160000.1.1.ppc64le —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:radvd-0:2.21-160000.1.1.s390x —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:radvd-0:2.21-160000.1.1.x86_64 —
Vendor Fix
Threats
Impact important
References
To clipboard 

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    "title": "Security update for radvd",
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  "product_tree": {
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      {
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          {
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              {
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                "name": "radvd-0:2.21-160000.1.1.aarch64",
                "product": {
                  "name": "radvd-0:2.21-160000.1.1.aarch64",
                  "product_id": "radvd-0:2.21-160000.1.1.aarch64",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:litech:router_advertisement_daemon:2.21:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/radvd@2.21-160000.1.1?arch=aarch64\u0026upstream=radvd-0:2.21-160000.1.1.src.rpm"
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          "text": "https://www.suse.com/security/cve/CVE-2026-48715"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the `radvdump` utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, `print_ff()` copies up to 2032 bytes from attacker-controlled packet data into a 16-byte `struct in6_addr` on the stack, overflowing by up to 2016 bytes. Note that the main `radvd` daemon is not affected by the vulnerability. Version 2.21 patches the issue.",
          "title": "CVE description"
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          "url": "https://bugzilla.suse.com/1268641"
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          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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      "title": "CVE-2026-48715"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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