🛡️ CVE-2025-70099
🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-476 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A NULL pointer dereference in the ext4_dir_en_get_name_len function in include/ext4_dir.h of lwext4 1.0.0 allows attackers to cause a denial of service by supplying a specially crafted EXT4 filesystem image with malformed directory entries. During directory iteration, the code may fail to validate the directory entry pointer before accessing the name_len field, resulting in a segmentation fault. This affects versions based on (or equivalent to) the 2016-era codebase (1.0.0).

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-476
Public Exploit ✅ No
Source NVD
Published 2026-06-01
Updated 2026-06-03
Modified 2026-06-02
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown

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