KissFFT before commit 8a8e66e contains an integer overflow vulnerability in the kiss_fftndr_alloc() function in kiss_fftndr.c where the allocation size calculation dimOther*(dimReal+2)*sizeof(kiss_fft_scalar) overflows signed 32-bit integer arithmetic before being widened to size_t, causing malloc() to allocate an undersized buffer. Attackers can trigger heap buffer overflow by providing crafted dimensions that cause the multiplication to exceed INT_MAX, allowing writes beyond the allocated buffer region when kiss_fftndr() processes the data.
Ubuntu released USN-8745-1 fixing two KissFFT flaws that could cause denial of service or arbitrary code execution.
Ubuntu security notice USN-8745-1 fixes CVE-2025-34297, where large Fourier transform sizes on 32-bit architectures are mishandled, and CVE-2026-41445, involving multidimensional Fourier transform sizes. Either issue could crash KissFFT, resulting in denial of service or arbitrary code execution. Users should apply the updated packages.