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CVE-2025-34297— KissFFT Integer Overflow Heap Buffer Overflow via kiss_fft_alloc

Quick assessment

Affected
mborgerding/kissfft mborgerding/kissfft
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

KISS FFT是mborgerding个人开发者的一个傅里叶变换计算库。 KISS FFT 1b083165之前版本存在输入验证错误漏洞，该漏洞源于kiss_fft.c中函数kiss_fft_alloc存在整数溢出，可能导致堆缓冲区溢出。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
mborgerding/kissfft mborgerding/kissfft < 1b08316582049c3716154caefc0deab8758506e3 affected
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I. Basic Information for CVE-2025-34297

Vulnerability Information
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Vulnerability Title
KissFFT Integer Overflow Heap Buffer Overflow via kiss_fft_alloc
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
KISS FFT 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
KISS FFT是mborgerding个人开发者的一个傅里叶变换计算库。 KISS FFT 1b083165之前版本存在输入验证错误漏洞，该漏洞源于kiss_fft.c中函数kiss_fft_alloc存在整数溢出，可能导致堆缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mborgerding/kissfft mborgerding/kissfft 0 ~ 1b08316582049c3716154caefc0deab8758506e3 -

II. Public POCs for CVE-2025-34297

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2025-34297

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IV. Related Vulnerabilities

Same weakness: CWE-190

V. Comments for CVE-2025-34297

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