{"id":"UBUNTU-CVE-2026-48715","details":"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.","modified":"2026-06-29T13:56:50.966949077Z","published":"2026-06-19T20:16:00Z","upstream":["CVE-2026-48715"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-48715"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-48715"},{"type":"REPORT","url":"https://github.com/radvd-project/radvd/security/advisories/GHSA-52px-gh9p-m379"}],"affected":[{"package":{"name":"radvd","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/radvd?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.9.1-1.1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"1:1.9.1-1.1ubuntu2","binary_name":"radvd"}],"priority_reason":"This is only a denial of service in the radvdump utility"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48715.json"}},{"package":{"name":"radvd","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/radvd?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.11-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1:2.11-1","binary_name":"radvd"}],"priority_reason":"This is only a denial of service in the radvdump utility"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48715.json"}},{"package":{"name":"radvd","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/radvd?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.16-3"],"ecosystem_specific":{"binaries":[{"binary_version":"1:2.16-3","binary_name":"radvd"},{"binary_name":"radvdump","binary_version":"1:2.16-3"}],"priority_reason":"This is only a denial of service in the radvdump utility"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48715.json"}},{"package":{"name":"radvd","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/radvd?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.17-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1:2.17-2","binary_name":"radvd"},{"binary_name":"radvdump","binary_version":"1:2.17-2"}],"priority_reason":"This is only a denial of service in the radvdump utility"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48715.json"}},{"package":{"name":"radvd","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/radvd?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.18-3build1","1:2.18-3build2"],"ecosystem_specific":{"binaries":[{"binary_name":"radvd","binary_version":"1:2.18-3build2"},{"binary_version":"1:2.18-3build2","binary_name":"radvdump"}],"priority_reason":"This is only a denial of service in the radvdump utility"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48715.json"}},{"package":{"name":"radvd","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/radvd?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.19-1","1:2.19-1ubuntu1"],"ecosystem_specific":{"priority_reason":"This is only a denial of service in the radvdump utility","binaries":[{"binary_version":"1:2.19-1ubuntu1","binary_name":"radvd"},{"binary_version":"1:2.19-1ubuntu1","binary_name":"radvdump"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48715.json"}},{"package":{"name":"radvd","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/radvd?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.20-1"],"ecosystem_specific":{"priority_reason":"This is only a denial of service in the radvdump utility","binaries":[{"binary_version":"1:2.20-1","binary_name":"radvd"},{"binary_version":"1:2.20-1","binary_name":"radvdump"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48715.json"}},{"package":{"name":"radvd","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/radvd?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.20-1","1:2.20-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"radvd","binary_version":"1:2.20-1build1"},{"binary_name":"radvdump","binary_version":"1:2.20-1build1"}],"priority_reason":"This is only a denial of service in the radvdump utility"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48715.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]}