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CVE-2026-48984

pam_usb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below, the xfree() memory release helper in calls free() without first zeroing the buffer contents, releasing heap-allocated buffers containing sensitive data — including one-time pad bytes read from disk — without clearing, leaving the sensitive content in freed heap memory until it happens to be overwritten by a subsequent allocation. On a system where a use-after-free condition exists, or
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0fd684d7e6f402b44456ae8b77ba38b209e9aa9863176d3038ae9c915f186d07
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-14","description":"CWE-14: Compiler Removal of Code to Clear Buffers","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:25953b917bfef0da4392a0e0025a6a483a6ff06e2883451dc5af1df7dcf920cc · sha256:ce415ff1458567c3… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-226","description":"CWE-226: Sensitive Information in Resource Not Removed Before Reuse","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:25953b917bfef0da4392a0e0025a6a483a6ff06e2883451dc5af1df7dcf920cc · sha256:ce415ff1458567c3… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"pam_usb","vendor":"mcdope","versions":[{"status":"affected","version":"< 0.9.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:25953b917bfef0da4392a0e0025a6a483a6ff06e2883451dc5af1df7dcf920cc · sha256:ce415ff1458567c3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":4.7,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:25953b917bfef0da4392a0e0025a6a483a6ff06e2883451dc5af1df7dcf920cc · sha256:ce415ff1458567c3… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-14","description":"CWE-14: Compiler Removal of Code to Clear Buffers","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:25953b917bfef0da4392a0e0025a6a483a6ff06e2883451dc5af1df7dcf920cc · sha256:ce415ff1458567c3… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-226","description":"CWE-226: Sensitive Information in Resource Not Removed Before Reuse","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:25953b917bfef0da4392a0e0025a6a483a6ff06e2883451dc5af1df7dcf920cc · sha256:ce415ff1458567c3… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/mcdope/pam_usb/releases/tag/0.9.2","tags":["x_refsource_MISC"],"url":"https://github.com/mcdope/pam_usb/releases/tag/0.9.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:25953b917bfef0da4392a0e0025a6a483a6ff06e2883451dc5af1df7dcf920cc · sha256:ce415ff1458567c3… · /containers/cna/references/1
{"name":"https://github.com/mcdope/pam_usb/security/advisories/GHSA-rmp6-wfrq-wrrc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/mcdope/pam_usb/security/advisories/GHSA-rmp6-wfrq-wrrc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:25953b917bfef0da4392a0e0025a6a483a6ff06e2883451dc5af1df7dcf920cc · sha256:ce415ff1458567c3… · /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.

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