kissfft — security advisory
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.
- Products
- kissfft
- Affected versions
- 131.1.0-3, 131.1.0-4, 131.1.0-4.1~deb12u1, 131.1.0-4.1~deb13u1
- Fixed versions
- 131.1.0-4.1, 131.1.0-4.1~deb12u1, 131.1.0-4.1~deb13u1
- CVEs
- CVE-2025-34297
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 23:13 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2025-34297
kissfft
Fixed versions: 131.1.0-4.1~deb12u1
kissfft
Fixed versions: 131.1.0-4.1~deb13u1
kissfft
Fixed versions: 131.1.0-4.1
Complete source record
{
"id": "4d12fafc97787a33f0893c4ca3a59d903f86e4d7e65e15543e194b6b6f7543b3",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2025-34297",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2025-34297",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2025-34297",
"products": [
{
"name": {
"value": "kissfft",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "131.1.0-4.1~deb12u1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "131.1.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "131.1.0-4",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "kissfft",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "131.1.0-4.1~deb13u1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "131.1.0-3",
"evidence": "/affected/1/versions"
},
{
"value": "131.1.0-4",
"evidence": "/affected/1/versions"
},
{
"value": "131.1.0-4.1~deb12u1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "kissfft",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "131.1.0-4.1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "131.1.0-3",
"evidence": "/affected/2/versions"
},
{
"value": "131.1.0-4",
"evidence": "/affected/2/versions"
},
{
"value": "131.1.0-4.1~deb12u1",
"evidence": "/affected/2/versions"
},
{
"value": "131.1.0-4.1~deb13u1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2025-34297",
"aliases": [
"DEBIAN-CVE-2025-34297"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "131.1.0-4.1~deb12u1"
}
]
}
],
"package": {
"name": "kissfft",
"purl": "pkg:deb/debian/kissfft?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"131.1.0-3",
"131.1.0-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-34297.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "131.1.0-4.1~deb13u1"
}
]
}
],
"package": {
"name": "kissfft",
"purl": "pkg:deb/debian/kissfft?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"131.1.0-3",
"131.1.0-4",
"131.1.0-4.1~deb12u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-34297.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "131.1.0-4.1"
}
]
}
],
"package": {
"name": "kissfft",
"purl": "pkg:deb/debian/kissfft?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"131.1.0-3",
"131.1.0-4",
"131.1.0-4.1~deb12u1",
"131.1.0-4.1~deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-34297.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T17:47:38.216363190Z",
"provider": "osv",
"upstream": [
"CVE-2025-34297"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2025-34297"
]
},
"related_cves": [
{
"value": "CVE-2025-34297",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 418066,
"published_at": "2025-12-01T19:15:50.42+00:00"
}