CVE-2026-42443

published 2026-05-12

CVE-2026-42443: 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…

Priority P4 21 medium 5.5 CVSS 3.1

AV L AC L PR N UI R S U C N I N A H

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
m2team	nanazip	—	—
m2team	nanazip	>= 5.0.1252.0 < 6.0.1698.0	6.0.1698.0

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CWE-369