CVE-2026-42443 (GCVE-0-2026-42443)

Vulnerability from cvelistv5 – Published: 2026-05-12 19:21 – Updated: 2026-05-12 19:44
VLAI
Title
NanaZip: Integer divide-by-zero in NanaZip UFS inode offset calculation
Summary
NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, an integer divide-by-zero exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS image where the superblock field fs_ipg (inodes per cylinder group) is set to zero. The parser uses this attacker-controlled value as a divisor without validation, causing an immediate hardware trap and process crash. This vulnerability is fixed in 6.0.1698.0.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 19:43 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7820 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
M2Team NanaZip Affected: >= 5.0.1250.0, < 6.0.1698.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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