MEDIUM 5.5 Microsoft
CVE-2026-88386
libsndfile 1.2.2 contains a misaligned memory access issue in psf_binheader_readf() while parsing WAV fmt chunks. A specially crafted WAV file can cause the function to cast an unaligned destination address to unsigned int * and perform a 4-byte store. This results in undefined behavior leading to denial of service.
Microsoft Security Update 2026-Sep: libsndfile 1.2.2 contains a misaligned memory access issue in psf_binheader_readf() while parsing WAV fmt chunks. A specially crafted WAV file can cause the function to cast an unaligned destination address to unsigned int * and perform a 4-byte store. This results in undefined behavior leading to denial of service.
Affected Products
- azl3 libsndfile 1.2.2-5 on Azure Linux 3.0
- azl3 libsndfile 1.2.2-7 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88386
- https://nvd.nist.gov/vuln/detail/CVE-2026-88386
This medium severity vulnerability with a CVSS score of 5.5 was published on 2026-09-08 via Microsoft. Affected: azl3 libsndfile 1.2.2-5 on Azure Linux 3.0, azl3 libsndfile 1.2.2-7 on Azure Linux 3.0.
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