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CVE-2026-42442

5.5 Moyenne

Publiée le 12/05/2026 à 22:16 · Modifiée le 17/06/2026 à 12:47 · Analysée par le NVD · Source : security-advisories@github.com

Description

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.

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Produits concernés

Scores CVSS

VersionScoreSourceVecteur
3.1 3.3 Faible security-advisories@github.com CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
3.1 5.5 Moyenne nvd@nist.gov (NVD) CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Faiblesses (CWE)

Références

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