GCVE-110-CERTCC-2026-924114

### Overview [dr_flac](https://github.com/mackron/dr_libs/blob/master/dr_flac.h), an open-source FLAC audio decoder, part of the [dr_libs](https://github.com/mackron/dr_libs) audio decoder toolset, contains an integer overflow vulnerability allowing for denial of service (DoS) when provided a specific crafted file. An attacker can exploit this vulnerability through providing a tool that uses dr_flac a specially crafted file, and can cause the tool to crash. The vulnerability, tracked as CVE-2025-14369, has been patched in commit b2197b2 of dr_flac. In an enterprise situation, audio tools that use dr_flac may be susceptible to crashes or other abnormal behavior if they process attacker-controlled files. ### Description dr_libs is an open-source audio decoding tool. It is made of three separate tools, dr_flac, dr_mp3, and dr_wav, which can decode FLAC, MP3, and WAV files respectively. An integer overflow vulnerability has been discovered, tracked as CVE-2025-14369 within dr_libs. An attacker who can supply crafted input FLAC files to the tool may trigger allocation of a large amount of memory, leading to a crash or unintended function of the tool. During function, a single block of memory could be allocated to `totalPCMFrameCount` from the FLAC metadata without validation before the calculation of the bugger size. This could result in a specifically crafted file being allocated an arbitrary amount of memory space. ### Impact An attacker able to send input data in the form of FLAC files to the tool or other input stream that uses dr_flac could cause a crash or DoS attack. ### Solution Commit b2197b2, released on GitHub, fixes the issue. Users should update to the latest version ASAP. All versions prior to commit b2197b2 are affected. ### Acknowledgements Thanks to the reporter who wishes to remain Maor Caplan.This document was written by Christopher Cullen.