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Mon, 22 Jun 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Thu, 18 Jun 2026 21:30:00 +0000
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| First Time appeared |
Mcdope
Mcdope pam Usb |
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| Vendors & Products |
Mcdope
Mcdope pam Usb |
Thu, 18 Jun 2026 19:45:00 +0000
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| Description | pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, a symlink race condition exists in per-device and per-user pad directory creation. pam_usb uses a check-then-act pattern: it calls lstat() to test for existence and then calls mkdir() separately to create the directory. A local attacker can win the race between these calls by replacing the target path with a symlink to a directory they control. If successful, one-time pad files may be written to an attacker-controlled location, potentially exposing future pad values before use or disrupting authentication. This issue has been fixed in version 0.9.2. | |
| Title | pam_usb: TOCTOU race condition in pad directory creation allows symlink substitution | |
| Weaknesses | CWE-367 | |
| References |
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| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-22T12:41:34.711Z
Reserved: 2026-05-26T23:26:07.975Z
Link: CVE-2026-48983
Updated: 2026-06-22T12:41:27.836Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-06-18T21:30:16Z