{"id":"CVE-2026-112007","published":"2026-10-18T12:17:13.097","lastModified":"2026-10-18T12:17:13.097","description":"Schism Tracker through 20260524 contains a heap out-of-bounds write vulnerability in fmt_ult_load_song() in fmt/ult.c that fails to clamp the one-byte sample count to MAX_SAMPLES. Attackers can supply a crafted .ult module that overwrites the instruments pointer array, causing csf_destroy() to free attacker-chosen pointers and crash the application.","cvssScore":6.1,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","cwes":["CWE-787"],"vendors":[],"products":[],"references":[{"url":"https://github.com/schismtracker/schismtracker","tags":[]},{"url":"https://github.com/schismtracker/schismtracker/blob/74215ae300b555928332e03152dfcdc898f96ca6/fmt/ult.c#L319-L330","tags":[]},{"url":"https://hackmd.io/@haindpwn/schismtracker-ult-sample-count-oob-write","tags":[]},{"url":"https://www.vulncheck.com/advisories/schism-tracker-through-20260524-heap-out-of-bounds-write-via-ult-loader","tags":[]}],"exploitRefs":[{"url":"https://github.com/schismtracker/schismtracker","tags":[]},{"url":"https://github.com/schismtracker/schismtracker/blob/74215ae300b555928332e03152dfcdc898f96ca6/fmt/ult.c#L319-L330","tags":[]}],"hasPoc":true,"ai":null}