{"id":"CVE-2026-71980","summary":"Belledonne Communications bcg729 1.1.2 Out-of-Bounds Read via decodeSIDframe()","details":"Belledonne Communications bcg729 through 1.1.2 contains an out-of-bounds read vulnerability in the decodeSIDframe() function in src/cng.c that allows unauthenticated network-adjacent attackers to trigger a heap read beyond buffer boundaries by sending a zero-length comfort-noise RTP payload. A zero-length payload causes an integer underflow in the uint8_t filter order calculation, which wraps to 255 and is clamped to 10, causing the function to unconditionally read 11 bytes from a zero-byte buffer, resulting in media process termination or silent consumption of adjacent heap memory as reflection coefficients.","modified":"2026-08-19T03:48:52.447581644Z","published":"2026-08-17T17:50:41.205Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71980.json"},"references":[{"type":"WEB","url":"https://www.linphone.org/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71980.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-71980"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/belledonne-communications-bcg729-out-of-bounds-read-via-decodesidframe"},{"type":"REPORT","url":"https://github.com/BelledonneCommunications/bcg729/issues/23"},{"type":"PACKAGE","url":"https://github.com/BelledonneCommunications/bcg729"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/belledonnecommunications/bcg729","events":[{"introduced":"0"},{"fixed":"fb195811fe630415c9bf433c0c0bebde14314ff2"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION"],"extracted_events":[{"introduced":"0"},{"last_affected":"1.1.2"},{"introduced":"bcg729"},{"fixed":"1.1.2"}]}}],"versions":["1.1.1","1.1.0","1.0.4","1.0.3","1.0.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71980.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}