{"id":"CVE-2023-50926","summary":"Unvalidated DIO prefix info length in RPL-Lite in Contiki-NG","details":"Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bounds read can be caused by an incoming DIO message when using the RPL-Lite implementation in the Contiki-NG operating system. More specifically, the prefix information of the DIO message contains a field that specifies the length of an IPv6 address prefix. The value of this field is not validated, which means that an attacker can set a value that is longer than the maximum prefix length. Subsequently, a memcmp function call that compares different prefixes can be called with a length argument that surpasses the boundary of the array allocated for the prefix, causing an out-of-bounds read. The problem has been patched in the \"develop\" branch of Contiki-NG, and is expected to be included in the next release. Users are advised to update as soon as they are able to or to manually apply the changes in Contiki-NG pull request #2721.","aliases":["GHSA-jp4p-fq85-jch2"],"modified":"2026-04-10T05:05:42.202971Z","published":"2024-02-14T19:28:11.556Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/50xxx/CVE-2023-50926.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/50xxx/CVE-2023-50926.json"},{"type":"ADVISORY","url":"https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-jp4p-fq85-jch2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-50926"},{"type":"FIX","url":"https://github.com/contiki-ng/contiki-ng/pull/2721"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/contiki-ng/contiki-ng","events":[{"introduced":"0"},{"last_affected":"c20b12cd2db707d6c07918f8b26cfeb52cf298ca"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"4.9"}]}}],"versions":["2.0","2.1","2.2","2.2.1","2.2.2","2.2.3","2.3","2.4","2.5-release","2.6","2.6-rc0","develop/v3.x-fork","develop/v4.0","fork","old/v2.0","old/v2.1","old/v2.2","old/v2.2.1","old/v2.2.2","old/v2.2.3","old/v2.3","old/v2.4","old/v2.6","release/v4.0","release/v4.1","release/v4.2","release/v4.3","release/v4.4","release/v4.5","release/v4.6","release/v4.7","release/v4.8","release/v4.9"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-50926.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}