KissFFT Integer Overflow Heap Buffer Overflow via kiss_fft_alloc_CVE-2025-34297

8.6 / 10

HIGH

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Description

KissFFT versions prior to the fix commit 1b083165 contain an integer overflow in kiss_fft_alloc() in kiss_fft.c on platforms where size_t is 32-bit. The nfft parameter is not validated before being used in a size calculation (sizeof(kiss_fft_cpx) * (nfft - 1)), which can wrap to a small value when nfft is large. As a result, malloc() allocates an undersized buffer and the subsequent twiddle-factor initialization loop writes nfft elements, causing a heap buffer overflow. This vulnerability only affects 32-bit architectures.

AI Analysis

Integer overflow in kiss_fft_alloc() function, leading to a heap buffer overflow on 32-bit architectures.

Basic Information

ID CVE-2025-34297

Source VulnCheck

Published Dec 1, 2025 at 18:18

Modified Dec 1, 2025 at 18:37

Affected Product

Vendor mborgerding/kissfft

Product mborgerding/kissfft

Affected Versions mborgerding/kissfft mborgerding/kissfft 0

CWE Classification

CWE-190

AI Assessment

AI Score 8.6 / 10

AI Severity High

Vendor mborgerding

Product KissFFT

Version prior to commit 1b083165

References

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    "published": "2025-12-01T18:18:15.156Z",
    "modified": "2025-12-01T18:37:26.779Z",
    "type": "cve",
    "title": "KissFFT Integer Overflow Heap Buffer Overflow via kiss_fft_alloc",
    "source": "VulnCheck",
    "references": "https://github.com/mborgerding/kissfft/commit/1b08316582049c3716154caefc0deab8758506e3\nhttps://github.com/mborgerding/kissfft/issues/120\nhttps://www.vulncheck.com/advisories/kissfft-integer-overflow-heap-buffer-overflow",
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