Critical Buffer Overflow Vulnerability in KISS FFT Affects Fedora 42 and 43

A critical buffer overflow vulnerability identified as CVE-2025-34297 affects the KISS FFT library used in Fedora 42 and 43. This vulnerability, which allows for an integer overflow heap buffer overflow via the kiss_fft_alloc function, was published on December 1, 2025. The issue has been addressed with the release of KISS FFT version 131.2.0, which includes a fix for the vulnerability. Users are advised to update their systems to mitigate potential exploitation risks. The update can be installed using the 'dnf' update program. The vulnerability impacts users of the KISS FFT library, particularly those running Fedora versions 42 and 43. The patch was made available on March 9, 2026. Security professionals should prioritize this update to prevent potential attacks exploiting this vulnerability.

Key Points: • CVE-2025-34297 is a critical buffer overflow vulnerability in KISS FFT. • The vulnerability affects Fedora 42 and 43 users and can lead to exploitation via kiss_fft_alloc. • A patch was released on March 9, 2026, and users are urged to update immediately.