CVE-2025-70101

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Source
https://cve.org/CVERecord?id=CVE-2025-70101
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-70101.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-70101
Published
2026-06-03T00:00:00Z
Modified
2026-07-15T01:48:59.712188658Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

An out-of-bounds read in the ext4extbinsearchidx function in src/ext4extent.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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/70xxx/CVE-2025-70101.json",
    "cna_assigner": "mitre"
}
References

Affected packages

Git / github.com/gkostka/lwext4

Affected ranges

Type
GIT
Repo
https://github.com/gkostka/lwext4
Events
Introduced
890484c72dbb321535127625c3686e51f1f424b9
Last affected
890484c72dbb321535127625c3686e51f1f424b9
Database specific 
{
    "cpe": "cpe:2.3:a:gkostka:lwext4:1.0.0:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "1.0.0"
        },
        {
            "last_affected": "1.0.0"
        }
    ],
    "source": "CPE_STRING"
}

Affected versions

1.*
1.0.0
v1.*
v1.0.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-70101.json"