Bug 2459795 (CVE-2026-41445)

Summary: CVE-2026-41445 KissFFT: KissFFT: Heap buffer overflow via integer overflow in kiss_fftndr_alloc()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in KissFFT. Attackers can exploit an integer overflow vulnerability in the kiss_fftndr_alloc() function by providing specially crafted dimensions. This overflow causes an undersized memory buffer to be allocated, leading to a heap buffer overflow when data is processed by kiss_fftndr(). This can allow an attacker to write beyond the intended memory region, potentially leading to arbitrary code execution or denial of service.
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Description OSIDB Bzimport 2026-04-20 17:02:19 UTC 
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.