What’s Vulnerable › Vulnerabilities
CVE-2026-37555
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-04-29 · updated 2026-07-15
- Weakness: CWE-190
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.
Affected products
References
- https://gist.github.com/sgInnora/a5f5c19e4bf6f4fb74fab7b0ef2bfcc1
- https://github.com/libsndfile/libsndfile/commit/9a829113c88a51e57c1e46473e90609e4b7df151
- https://github.com/libsndfile/libsndfile/issues/833
- https://access.redhat.com/errata/RHSA-2026:19559
- https://access.redhat.com/errata/RHSA-2026:19560
- https://access.redhat.com/errata/RHSA-2026:19610
- https://access.redhat.com/errata/RHSA-2026:23221
- https://access.redhat.com/errata/RHSA-2026:23222
- https://access.redhat.com/errata/RHSA-2026:23223
- https://access.redhat.com/errata/RHSA-2026:25092
- https://access.redhat.com/errata/RHSA-2026:25197
- https://access.redhat.com/errata/RHSA-2026:25198
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