NULL pointer dereference in Mcdope Pam Usb
CVE-2026-44710
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.
EPSS: 0.002 (7.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Mcdope Pam_usb — versions < 0.8.7
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-44710?
- CVE-2026-44710 is a medium-severity vulnerability in Mcdope Pam Usb, classified under NULL Pointer Dereference. CVSS score: 4.6/10. Published 2026-05-27.
- How severe is CVE-2026-44710?
- Medium severity. CVSS v3 base score is 4.6 out of 10.