{"id":"CVE-2023-45676","summary":"Multi-byte write heap buffer overflow in start_decoder in stb_vorbis","details":"stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger out of bounds write in `f-\u003evendor[i] = get8_packet(f);`. The root cause is an integer overflow in `setup_malloc`. A sufficiently large value in the variable `sz` overflows with `sz+7` in and the negative value passes the maximum available memory buffer check. This issue may lead to code execution.","modified":"2026-03-14T12:15:08.562519Z","published":"2023-10-20T23:26:47.709Z","related":["openSUSE-SU-2025:0037-1","openSUSE-SU-2025:14642-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45676.json","cwe_ids":["CWE-787"],"cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45676.json"},{"type":"WEB","url":"https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L3656"},{"type":"WEB","url":"https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L950-L960"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-45676"},{"type":"ADVISORY","url":"https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-45676.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"1.22"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}