Bug 2363236 (CVE-2025-47153)

Summary: CVE-2025-47153 nodejs: libuv: Out-of-Bounds Access Due to Inconsistent off_t Size in libuv and Node.js Build on i386
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the build process of libuv and Node.js on 32-bit systems. This vulnerability allows out-of-bounds memory access via mismatched _FILE_OFFSET_BITS settings during compilation, where libuv is built with 64-bit file offsets and Node.js with 32-bit defaults.
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Description OSIDB Bzimport 2025-05-01 08:01:12 UTC 
Certain build processes for libuv and Node.js for 32-bit systems, such as for the nodejs binary package through nodejs_20.19.0+dfsg-1_i386.deb for Debian GNU/Linux, have an inconsistent off_t size (e.g., building on i386 Debian always uses _FILE_OFFSET_BITS=64 for the libuv dynamic library, but uses the _FILE_OFFSET_BITS global system default of 32 for nodejs), leading to out-of-bounds access. NOTE: this is not a problem in the Node.js software itself. In particular, the Node.js website's download page does not offer prebuilt Node.js for Linux on i386.