CVE-2025-6516

Description

HDF5 H5Fint.c H5F_addr_decode_len heap-based overflow. Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability? One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.

Affected Products

• ▸cbl2 hdf5 1.14.4-1 on CBL Mariner 2.0
• ▸cbl2 hdf5 1.14.4-1
• ▸azl3 hdf5 1.14.4.3-1 on Azure Linux 3.0

CVSS Vector