CVE-2025-70101_CVE-2025-70101

6.5 / 10

MEDIUM

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

Description

An out-of-bounds read in the ext4_ext_binsearch_idx function in src/ext4_extent.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by supplying a specially crafted ext4 filesystem image. The vulnerability occurs due to insufficient validation of extent header fields before performing a binary search over extent index entries, which can result in invalid pointer calculations and an out-of-bounds memory read during extent tree traversal.

Basic Information

ID CVE-2025-70101

Source mitre

Published Jun 3, 2026 at 00:00

Modified Jun 3, 2026 at 17:36

Affected Product

Vendor n/a

Product n/a

Version n/a

Affected Versions n/a n/a n/a

CWE Classification

CWE-125

References

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    "published": "2026-06-03T00:00:00.000Z",
    "modified": "2026-06-03T17:36:08.913Z",
    "type": "cve",
    "title": "CVE-2025-70101",
    "source": "mitre",
    "references": "https://github.com/gkostka/lwext4/issues/91\nhttps://github.com/sigdevel/pocs/blob/main/res/lwext4/3/sig11_lwext4_ext4_extent_815\nhttps://infosec.exchange/@sigdevel/116668958927817708",
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