CVE-2026-42442

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a null-pointer dereference exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS image where the root inode (inode 2) is set to IFLNK (symlink) instead of IFDIR (directory). The parser unconditionally treats the root inode as a directory without checking its type, and when the symlink has an embedded target (small di_size), the directory data buffer is zero-length, causing a null-pointer dereference on the first read. This vulnerability is fixed in 6.0.1698.0.

CVSS v3 3.3 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/M2Team/NanaZip/security/advisories/GHSA-8r4x-fx3w-ph77	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:m2team:nanazip:*:*:*:*:*:*:*:*

History

18 May 2026, 13:51

Type	Values Removed	Values Added
CPE		cpe:2.3:a:m2team:nanazip::::::::
First Time		M2team M2team nanazip
References	~~() https://github.com/M2Team/NanaZip/security/advisories/GHSA-8r4x-fx3w-ph77 -~~	() https://github.com/M2Team/NanaZip/security/advisories/GHSA-8r4x-fx3w-ph77 - Mitigation, Vendor Advisory

12 May 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-12 20:16

Updated : 2026-05-18 13:51

NVD link : CVE-2026-42442

Mitre link : CVE-2026-42442

CVE.ORG link : CVE-2026-42442

JSON object : View

Products Affected

m2team

nanazip

CWE

CWE-476

NULL Pointer Dereference

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