Heap-based Buffer Overflow Affecting blosc/c-blosc2 package, versions [,2.17.1)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-BLOSCCBLOSC2-9901429
- published29 Apr 2025
- disclosed4 Apr 2025
- creditlmarch2
Introduced: 4 Apr 2025
NewCVE-2025-29476 (opens in a new tab)How to fix?
Upgrade blosc/c-blosc2 to version 2.17.1 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the sw32_() function in blosc-private.h. An attacker can execute arbitrary code or cause a crash by providing specially crafted input to trigger the overflow.