CVE-2026-111136
MEDIUM
CVSS 6.1
Published: 2026-10-15
Modified: 2026-10-16
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Description
libInstPatch through 1.1.7 contains a heap out-of-bounds write vulnerability in the SoundFont 2 loader because ipatch_sf2_gen_is_valid() does not range-check generator IDs before the validity mask test. Attackers can supply crafted SF2 files with out-of-range pgen or igen generator IDs to write attacker-chosen values past the zone genarray, corrupting heap memory and crashing Swami or other consumers.
Quick Facts
| CVE ID | CVE-2026-111136 |
| CVSS Score | 6.1 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H |
| Published | 2026-10-15 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/swami/libinstpatch
- https://github.com/swami/libinstpatch/blob/4ff1939ccc24de204…
- https://github.com/swami/libinstpatch/blob/4ff1939ccc24de204…
- https://github.com/swami/libinstpatch/blob/4ff1939ccc24de204…
- https://hackmd.io/@haind-pwn/libinstpatch-sf2-generator-id-o…
- https://www.vulncheck.com/advisories/libinstpatch-through-1.…
- https://hackmd.io/@haind-pwn/libinstpatch-sf2-generator-id-o…