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.
Metrics
Affected Vendors & Products
References
History
Mon, 18 May 2026 14:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:m2team:nanazip:*:*:*:*:*:*:*:* |
Wed, 13 May 2026 00:15:00 +0000
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|---|---|---|
| First Time appeared |
M2team
M2team nanazip |
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| Vendors & Products |
M2team
M2team nanazip |
Tue, 12 May 2026 20:15:00 +0000
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| Metrics |
ssvc
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Tue, 12 May 2026 19:30:00 +0000
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| 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. | |
| Title | NanaZip: Integer divide-by-zero in NanaZip UFS inode offset calculation | |
| Weaknesses | CWE-369 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-05-12T19:21:31.264Z
Updated: 2026-05-12T19:44:22.314Z
Reserved: 2026-04-27T13:55:58.692Z
Link: CVE-2026-42443
Updated: 2026-05-12T19:44:08.751Z
Status : Analyzed
Published: 2026-05-12T20:16:41.520
Modified: 2026-05-18T13:46:34.960
Link: CVE-2026-42443
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