VULNERABILITY INTELLIGENCE

CVE-2026-37555

CVSS score7.5 HIGH
EPSS probability0.50%
CISA KEVNot currently listed
Published2026-04-29
Last modified2026-07-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec. The AIFF code path (line 241) was fixed with (sf_count_t) cast, but the WAV code path (line 235) and close path (line 167) were not. When samplesperblock (int) * blocks (int) exceeds INT_MAX, the 32-bit multiplication overflows before being assigned to sf.frames (sf_count_t/int64). With samplesperblock=50000 and blocks=50000, the product 2500000000 overflows to -1794967296. This causes incorrect frame count leading to heap buffer overflow or denial of service. Both values come from the WAV file header and are attacker-controlled. This issue was discovered after an incomplete fix for CVE-2022-33065.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-190
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-190

Primary references