GHSA-qfh4-g83h-4vcxMediumCVSS 6.1
Schism Tracker through 20260524 contains a heap out-of-bounds write vulnerability in...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2026-112007
- https://github.com/schismtracker/schismtracker
- https://github.com/schismtracker/schismtracker/blob/74215ae300b555928332e03152dfcdc898f96ca6/fmt/ult.c#L319-L330
- https://hackmd.io/@haindpwn/schismtracker-ult-sample-count-oob-write
- https://www.vulncheck.com/advisories/schism-tracker-through-20260524-heap-out-of-bounds-write-via-ult-loader
- https://github.com/advisories/GHSA-qfh4-g83h-4vcx