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CVE-2026-42444

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 denial-of-service vulnerability exists in the littlefs filesystem image parser in NanaZip. The handler's Open method reads BlockCount directly from the attacker-controlled superblock without any validation against the actual file size or any upper-bound ceiling, then iterates BlockCount times, allocating a file-path entry per iteration. A crafted 44-byte littlefs image with BlockCount = 0xFFFFFFFF causes ~4 billion heap allocations, exhausting available memory. 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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