CVE-2026-44710
MEDIUM EPSS 7.6%
Published May 27, 20261mo ago · Modified Jun 17, 20262w ago
4.6 CVSS 3.1
Published May 27, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector Physical
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
7.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-476 NULL Pointer Dereference Memory Safety
References 1
- github.com https://github.com/mcdope/pam_usb/security/advisories/GHSA-j8cq-2gv6-gfwf
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.