Bug 2567901 (CVE-2026-122330) - CVE-2026-122330 c-blosc2: c-blosc2: Denial of Service via divide-by-zero in slice processing
Summary: CVE-2026-122330 c-blosc2: c-blosc2: Denial of Service via divide-by-zero in s...
Keywords:
Status: NEW
Alias: CVE-2026-122330
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-05 22:35 UTC by OSIDB Bzimport
Modified: 2026-11-06 02:26 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-11-05 22:35:02 UTC 
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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