Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libsndfile Project | Libsndfile | 1.2.2 |
Related Weaknesses (CWE)
References
- https://gist.github.com/sgInnora/a5f5c19e4bf6f4fb74fab7b0ef2bfcc1ExploitThird Party Advisory
- https://github.com/libsndfile/libsndfile/commit/9a829113c88a51e57c1e46473e90609ePatch
- https://github.com/libsndfile/libsndfile/issues/833Issue Tracking
- https://github.com/libsndfile/libsndfile/issues/833Issue Tracking
FAQ
What is CVE-2026-37555?
CVE-2026-37555 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 s...
How severe is CVE-2026-37555?
CVE-2026-37555 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-37555?
Check the references section above for vendor advisories and patch information. Affected products include: Libsndfile Project Libsndfile.