CVE-2025-4802

Description

Untrusted LD_LIBRARY_PATH environment variable vulnerability in the GNU C Library version 2.27 to 2.38 allows attacker controlled loading of dynamically shared library in statically compiled setuid binaries that call dlopen (including internal dlopen calls after setlocale or calls to NSS functions such as getaddrinfo).. 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 glibc 2.35-7 on CBL Mariner 2.0
• ▸azl3 glibc 2.38-11 on Azure Linux 3.0
• ▸azl3 glibc 2.38-12 on Azure Linux 3.0
• ▸cbl2 glibc 2.35-9 on CBL Mariner 2.0

CVSS Vector