🛡️ CVE-2025-70101
🟡 CVSS 6.5 — Medium ⚠️ Exploit Public CWE-125 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE CWE-125
Public Exploit ⚠️ Yes
Source NVD
Published 2026-06-03
Updated 2026-06-06
Modified 2026-06-05

Affected Packages

Software From version Fixed in
lwext4
unknown

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