CVE-2025-70099_CVE-2025-70099

7.5 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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).

Basic Information

ID CVE-2025-70099

Source mitre

Published Jun 1, 2026 at 00:00

Modified Jun 2, 2026 at 15:20

Affected Product

Vendor n/a

Product n/a

Version n/a

Affected Versions n/a n/a n/a

CWE Classification

CWE-476

References

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    "published": "2026-06-01T00:00:00.000Z",
    "modified": "2026-06-02T15:20:25.038Z",
    "type": "cve",
    "title": "CVE-2025-70099",
    "source": "mitre",
    "references": "https://github.com/gkostka/lwext4/issues/89\nhttps://github.com/sigdevel/pocs/blob/main/res/lwext4/1/sig11_2_1_lwext4_ext4_dir_h_126\nhttps://infosec.exchange/@sigdevel/116668939725424227",
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