CVE-2026-44710

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Source
https://cve.org/CVERecord?id=CVE-2026-44710
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44710.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-44710
Aliases
  • GHSA-j8cq-2gv6-gfwf
Published
2026-05-27T20:19:35Z
Modified
2026-10-28T10:51:46Z
Severity
  • 4.6 (Medium) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
pam_usb: NULL pointer dereference from UDisks device fields causes PAM crash and login denial-of-service
Details

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, src/device.c passed the return values of udisks_drive_get_serial(), udisks_drive_get_vendor(), and udisks_drive_get_model() directly to strcmp() without NULL checks. The GIO/UDisks API documentation states these accessors can return NULL for devices that do not expose the corresponding field. Passing NULL to strcmp() is undefined behaviour (typically a SIGSEGV). This vulnerability is fixed in 0.8.7.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-476"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44710.json"
}
References

Affected packages

Git / github.com/mcdope/pam_usb

Affected ranges

Type
GIT
Repo
https://github.com/mcdope/pam_usb
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
987f4f6ddf0a8c75ddd5f05b19b863220efe9005
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "0.8.7"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "0.8.7"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

0.*
0.5.0
0.7.1
0.7.2
0.7.3
0.8.3
0.8.4
v0.*
v0.7.0
v0.8.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44710.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "274006941693340921109215064742773008771"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-44710-9a35920a",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/mcdope/pam_usb/commit/987f4f6ddf0a8c75ddd5f05b19b863220efe9005",
        "target":  {
            "file":  "src/version.h"
        }
    }
]
vanir_signatures_modified 
"2026-10-28T10:51:46Z"