CVE-2026-48065

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2026-48065

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48065.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-48065

Aliases

GHSA-24mw-m2vf-36vp

Published

2026-05-27T19:58:36Z

Modified

2026-08-12T16:25:27Z

Severity

6.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

pam_usb: Unchecked integer multiplication before xmalloc() in conf.c allows heap-based buffer overflow on 32-bit targets

Details

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/conf.c allocates heap memory proportional to n_devices, a count derived from libxml2 XPath evaluation of the config file, without first enforcing an upper bound. On 32-bit targets (armv7l, i686 -- both listed in the project Makefile), the multiplication n_devices * sizeof(t_pusb_device) wraps around size_t, causing xmalloc() to receive a very small size. Because xmalloc() only calls abort() on NULL return, a small-but-non-NULL allocation is accepted, and subsequent array writes overflow the heap. This vulnerability is fixed in 0.9.1.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-122",
        "CWE-190"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48065.json"
}

References

Affected packages

Git / github.com/mcdope/pam_usb

Affected ranges

Type

GIT

Repo

https://github.com/mcdope/pam_usb

Events

Introduced

Fixed

e2f30b22cd0715fcde0fc62d6ee3e1ca6370b8a9

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.9.1"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

0.*

0.5.0

0.7.1

0.7.2

0.7.3

0.8.3

0.8.4

0.8.7

0.9.0

v0.*

v0.7.0

v0.8.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48065.json"

vanir_signatures

[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "32897324108646938673138056869665931337"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-48065-b792a2ae",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/mcdope/pam_usb/commit/e2f30b22cd0715fcde0fc62d6ee3e1ca6370b8a9",
        "target": {
            "file": "src/version.h"
        }
    }
]

vanir_signatures_modified

"2026-08-12T16:25:27Z"