CVE-2026-122330
Received Received - Intake

Divide-by-Zero in Blosc c-blosc2 Before 3.5.0

Publication date: 2026-11-05

Last updated on: 2026-11-05

Assigner: VulnCheck

Description
Blosc c-blosc2 before 3.5.0 contains a divide-by-zero vulnerability in blosc2_schunk_get_slice_buffer() in blosc/schunk.c that allows attackers to crash applications by supplying crafted frames with unchecked zero chunksize or blocksize values. Attackers can provide a malicious Blosc2 frame opened via blosc2_schunk_open() or blosc2_schunk_from_buffer() and read as a slice, raising SIGFPE and terminating the process.

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Meta Information

Published
2026-11-05
Last Modified
2026-11-05
Generated
2026-11-05
EPSS Evaluated
N/A
NVD
CVE-2026-122330
EUVD
EUVD-2026-117538

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Blosc c-blosc2 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-369 The product divides a value by zero.

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