CVE-2026-37555 Affecting libsndfile-utils package, versions <0:1.0.28-17.el8_10


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.5% (40th percentile)

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  • Snyk IDSNYK-ALMALINUX8-LIBSNDFILEUTILS-16786728
  • published21 May 2026
  • disclosed20 May 2026

Introduced: 20 May 2026

CVE-2026-37555  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 libsndfile-utils to version 0:1.0.28-17.el8_10 or higher.
This issue was patched in ALSA-2026:19559.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsndfile-utils package and not the libsndfile-utils package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1