CVE-2026-112007
published 2026-10-18CVE-2026-112007: 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…
PriorityP426medium6.1CVSS 3.1
AVLACLPRNUIRSUCNILAH
EPSS
0.13%
2.4th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| schismtracker | schism_tracker | <= 20260524 | — |
CVSS provenance
nvdv3.16.1MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
nvdv4.06.9MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat6.1MEDIUM
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Red Hat
schismtracker: Schism Tracker: Denial of Service via crafted ULT module file
vendor_redhat·2026-10-18·CVSS 6.1
CVE-2026-112007 [MEDIUM] CWE-787 schismtracker: Schism Tracker: Denial of Service via crafted ULT module file
schismtracker: Schism Tracker: Denial of Service via crafted ULT module file
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.
A flaw was found in Schism Tracker. An attacker could exploit this vulnerability by enticing a user to open a specially crafted UltraTracker (.ult) audio file. Due to missing boundary checks on sample counts during file parsing, the application performs an out-of-bounds memory write on the heap. This flaw can corrupt application memory and cause the program to crash,
GHSA
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.
ghsa_unreviewed·2026-10-18
CVE-2026-112007 [MEDIUM] CWE-787 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.
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-112007 schismtracker: Schism Tracker: Denial of Service via crafted ULT module file [fedora-all]
bugzilla·2026-10-21·CVSS 6.1
CVE-2026-112007 [MEDIUM] CVE-2026-112007 schismtracker: Schism Tracker: Denial of Service via crafted ULT module file [fedora-all]
CVE-2026-112007 schismtracker: Schism Tracker: Denial of Service via crafted ULT module file [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-112007 schismtracker: Schism Tracker: Denial of Service via crafted ULT module file
bugzilla·2026-10-18·CVSS 6.1
CVE-2026-112007 [MEDIUM] CVE-2026-112007 schismtracker: Schism Tracker: Denial of Service via crafted ULT module file
CVE-2026-112007 schismtracker: Schism Tracker: Denial of Service via crafted ULT module file
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.
https://github.com/schismtracker/schismtrackerhttps://github.com/schismtracker/schismtracker/blob/74215ae300b555928332e03152dfcdc898f96ca6/fmt/ult.c#L319-L330https://hackmd.io/@haindpwn/schismtracker-ult-sample-count-oob-writehttps://www.vulncheck.com/advisories/schism-tracker-through-20260524-heap-out-of-bounds-write-via-ult-loader
2026-10-18
Published