Out-of-bounds Write Affecting libinstpatch package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.2% (9th percentile)

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  • Snyk IDSNYK-ECHOLATEST-LIBINSTPATCH-21004902
  • published16 Oct 2026
  • disclosed15 Oct 2026

Introduced: 15 Oct 2026

NewCVE-2026-111136  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest libinstpatch.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libinstpatch package and not the libinstpatch package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1