CVE-2026-3994

A vulnerability was detected in rui314 mold up to 2.40.4. This issue affects the function mold::ObjectFilemold::X8664::initializesections of the file src/input-files.cc of the component Object File Handler. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Database specific

{
    "cwe_ids": [
        "CWE-119",
        "CWE-122"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3994.json",
    "cna_assigner": "VulDB"
}

References

Affected packages

Git / github.com/rui314/mold

Affected ranges

Type

GIT

Repo

https://github.com/rui314/mold

Events

Introduced

b53197300b5bf9f02daccae536f65dda2d1431c5

Last affected

083901f42dea2491be8bc7cf6e3b1e2b9a3c850d

Database specific

{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "2.40.0"
        },
        {
            "last_affected": "2.40.0"
        },
        {
            "introduced": "2.40.1"
        },
        {
            "last_affected": "2.40.1"
        },
        {
            "introduced": "2.40.2"
        },
        {
            "last_affected": "2.40.2"
        },
        {
            "introduced": "2.40.3"
        },
        {
            "last_affected": "2.40.3"
        },
        {
            "introduced": "2.40.4"
        },
        {
            "last_affected": "2.40.4"
        }
    ]
}

Affected versions

2.*

2.40.0

2.40.1

2.40.2

2.40.3

2.40.4

v2.*

v2.40.0

v2.40.1

v2.40.2

v2.40.3

v2.40.4

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3994.json"