{"id":"CVE-2026-112007","revision":"2bfea0b4a56e4eac9fb1387f324c8f3b","records":[{"revision":"2bfea0b4a56e4eac9fb1387f324c8f3b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-112007","aliases":[],"title":"Schism Tracker through 20260524 Heap Out-of-Bounds Write via ULT Loader","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.","state":0,"publishedAt":"2026-10-18T11:38:30.59+00:00","modifiedAt":"2026-10-19T16:38:41.739+00:00","affected":[{"ecosystem":"https://github.com/schismtracker/schismtracker","name":"Schism Tracker","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"schismtracker\",\n                    \"product\": \"Schism Tracker\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"20260524\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"collectionURL\": \"https://github.com/schismtracker/schismtracker\",\n                    \"packageURL\": \"pkg:github/schismtracker/schismtracker\",\n                    \"repo\": \"https://github.com/schismtracker/schismtracker\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","score":6.1,"severity":"MEDIUM"}],"references":["https://hackmd.io/@haindpwn/schismtracker-ult-sample-count-oob-write","https://github.com/schismtracker/schismtracker/blob/74215ae300b555928332e03152dfcdc898f96ca6/fmt/ult.c#L319-L330","https://github.com/schismtracker/schismtracker","https://www.vulncheck.com/advisories/schism-tracker-through-20260524-heap-out-of-bounds-write-via-ult-loader"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112007","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-112007","identifiers":["CVE-2026-112007"]},"retained":false,"historicalAffected":[]}],"coverage":[]}