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Vulnerabilities

Vulnerability · CVE-2025-34297

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.

Published Dec 1, 2025 · catalog updated Jul 14, 2026 · KissFFT versions prior to

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-34297. EPSS is 0.17%. Act only if a listed version of KissFFT versions prior to is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (KissFFT versions prior to).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.17%
Remediation
Version ranges on file
Affected products
vendor mborgerding/kissfft mborgerding/kissfft 0 <1b08316582049c3716154caefc0deab8758506e3

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor mborgerding/kissfft mborgerding/kissfft 0 <1b08316582049c3716154caefc0deab8758506e30 <1b08316582049c3716154caefc0deab8758506e3

How to fix CVE-2025-34297

  • Upgrade

    CVE-2025-34297 lists a fix boundary at 1b08316582049c3716154caefc0deab8758506e3. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in 0 <1b08316582049c3716154caefc0deab8758506e3

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-34297. EPSS is 0.17%. Act only if a listed version of KissFFT versions prior to is installed.

Which versions are affected?

Compare what you have installed with mborgerding/kissfft mborgerding/kissfft 0 <1b08316582049c3716154caefc0deab8758506e3 0 <1b08316582049c3716154caefc0deab8758506e3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.17%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 1, 2025 · EUVD

    Detected

    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

  2. Jul 14, 2026 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2025-34297

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-34297

    30-day exploitation probability 0.17%

    first.org
  • EUVDVulnerability recordEUVD-2025-200096

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 26, 2026
  • CVE.orgOct 26, 2026
  • EUVDOct 26, 2026