CVE Explorer
CVE-2026-47270
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, pam_usb is a PAM module loaded into the host process (sudo, login, GDM, GNOME Shell). Display managers such as GDM run multiple concurrent authentication threads. Three functions used by the deny_remote feature called the non-reentrant strtok(), which stores state in a single global pointer. If two authentications race, one thread's strtok() call can overwrite the other's in-progress tokenisation p
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"pam_usb","vendor":"mcdope","versions":[{"status":"affected","version":"< 0.9.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:141b3628c6c6eb470148794a0de22d953493962cb972d84e25a40d8ca3832737 · sha256:147b8be238beb1b8… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:141b3628c6c6eb470148794a0de22d953493962cb972d84e25a40d8ca3832737 · sha256:147b8be238beb1b8… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:141b3628c6c6eb470148794a0de22d953493962cb972d84e25a40d8ca3832737 · sha256:147b8be238beb1b8… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/mcdope/pam_usb/commit/94f1640a61d49dfaf38e782680a52f01d5bf8b51","tags":["x_refsource_MISC"],"url":"https://github.com/mcdope/pam_usb/commit/94f1640a61d49dfaf38e782680a52f01d5bf8b51"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:141b3628c6c6eb470148794a0de22d953493962cb972d84e25a40d8ca3832737 · sha256:147b8be238beb1b8… · /containers/cna/references/1
{"name":"https://github.com/mcdope/pam_usb/commit/d003e551b794a9e3774ff4720830fb7aadaa48bd","tags":["x_refsource_MISC"],"url":"https://github.com/mcdope/pam_usb/commit/d003e551b794a9e3774ff4720830fb7aadaa48bd"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:141b3628c6c6eb470148794a0de22d953493962cb972d84e25a40d8ca3832737 · sha256:147b8be238beb1b8… · /containers/cna/references/2
{"name":"https://github.com/mcdope/pam_usb/security/advisories/GHSA-j3xw-vc43-x7jg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/mcdope/pam_usb/security/advisories/GHSA-j3xw-vc43-x7jg"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:141b3628c6c6eb470148794a0de22d953493962cb972d84e25a40d8ca3832737 · sha256:147b8be238beb1b8… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.