PT-2026-45935 · Undefined · Undefined

Published 2026-06-03 · Updated 2026-06-03 · CVE-2025-70101

Mitre

CVSS v3.1

6.5

Medium

Base vector

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

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.

Exploit

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2025-70101

Affected Products

Undefined

References · 4

• 🔥 https://github.com/gkostka/lwext4/issues/91 · Exploit
• 🔥 https://github.com/sigdevel/pocs/blob/main/res/lwext4/3/sig11_lwext4_ext4_extent_815 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-70101 · Security Note
• https://infosec.exchange/@sigdevel/116668958927817708 · Note