Vulnerability Description
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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| M2Team | Nanazip | >= 5.0.1252.0, < 6.0.1698.0 |
Related Weaknesses (CWE)
References
- https://github.com/M2Team/NanaZip/security/advisories/GHSA-3x2h-gqqw-g3gmMitigationVendor Advisory
FAQ
What is CVE-2026-42443?
CVE-2026-42443 is a vulnerability with a CVSS score of 3.3 (LOW). 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 o...
How severe is CVE-2026-42443?
CVE-2026-42443 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42443?
Check the references section above for vendor advisories and patch information. Affected products include: M2Team Nanazip.