CVE-2026-48984

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48984", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-26T23:26:07.975Z", "datePublished": "2026-06-18T17:06:00.918Z", "dateUpdated": "2026-06-18T18:48:13.213Z"}, "containers": {"cna": {"title": "pam_usb: xfree() does not call explicit_bzero \u2014 sensitive cryptographic material may linger in freed heap", "problemTypes": [{"descriptions": [{"cweId": "CWE-14", "lang": "en", "description": "CWE-14: Compiler Removal of Code to Clear Buffers", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-226", "lang": "en", "description": "CWE-226: Sensitive Information in Resource Not Removed Before Reuse", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"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"}}], "references": [{"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"}, {"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"}], "affected": [{"vendor": "mcdope", "product": "pam_usb", "versions": [{"version": "< 0.9.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-18T17:06:00.918Z"}, "descriptions": [{"lang": "en", "value": "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 \u2014 including one-time pad bytes read from disk \u2014 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 where a heap inspection primitive becomes available, this could allow recovery of pad values or other authentication material from freed memory regions. This is a defence-in-depth requirement consistent with prior hardening work in this codebase (GHSA-vx6f-rrqr-j87c applied explicit_bzero to some pad paths; this issue generalises the pattern to the central deallocation helper)."}], "source": {"advisory": "GHSA-rmp6-wfrq-wrrc", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-18T18:47:42.610995Z", "id": "CVE-2026-48984", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-18T18:48:13.213Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-48984", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-18T18:47:42.610995Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-18T18:47:58.432Z"}}], "cna": {"title": "pam_usb: xfree() does not call explicit_bzero \u2014 sensitive cryptographic material may linger in freed heap", "source": {"advisory": "GHSA-rmp6-wfrq-wrrc", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "mcdope", "product": "pam_usb", "versions": [{"status": "affected", "version": "< 0.9.2"}]}], "references": [{"url": "https://github.com/mcdope/pam_usb/security/advisories/GHSA-rmp6-wfrq-wrrc", "name": "https://github.com/mcdope/pam_usb/security/advisories/GHSA-rmp6-wfrq-wrrc", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/mcdope/pam_usb/releases/tag/0.9.2", "name": "https://github.com/mcdope/pam_usb/releases/tag/0.9.2", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "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 \u2014 including one-time pad bytes read from disk \u2014 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 where a heap inspection primitive becomes available, this could allow recovery of pad values or other authentication material from freed memory regions. This is a defence-in-depth requirement consistent with prior hardening work in this codebase (GHSA-vx6f-rrqr-j87c applied explicit_bzero to some pad paths; this issue generalises the pattern to the central deallocation helper)."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-14", "description": "CWE-14: Compiler Removal of Code to Clear Buffers"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-226", "description": "CWE-226: Sensitive Information in Resource Not Removed Before Reuse"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-18T17:06:00.918Z"}}}, "cveMetadata": {"cveId": "CVE-2026-48984", "state": "PUBLISHED", "dateUpdated": "2026-06-18T18:48:13.213Z", "dateReserved": "2026-05-26T23:26:07.975Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-06-18T17:06:00.918Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "pam_usb", "vendor": "mcdope", "versions": [{"status": "affected", "version": "< 0.9.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 \u2014 including one-time pad bytes read from disk \u2014 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 where a heap inspection primitive becomes available, this could allow recovery of pad values or other authentication material from freed memory regions. This is a defence-in-depth requirement consistent with prior hardening work in this codebase (GHSA-vx6f-rrqr-j87c applied explicit_bzero to some pad paths; this issue generalises the pattern to the central deallocation helper)."}, {"lang": "es", "value": "pam_usb proporciona autenticaci\u00f3n de hardware para Linux utilizando medios extra\u00edbles ordinarios. En las versiones 0.9.1 e inferiores, el asistente de liberaci\u00f3n de memoria xfree() llama a free() sin primero poner a cero el contenido del b\u00fafer, liberando b\u00faferes asignados en el heap que contienen datos sensibles - incluyendo bytes de \u2019one-time pad\u2019 le\u00eddos del disco - sin limpiar, dejando el contenido sensible en la memoria del heap liberada hasta que sea sobrescrito por una asignaci\u00f3n posterior. En un sistema donde existe una condici\u00f3n de uso despu\u00e9s de liberaci\u00f3n, o donde un primitivo de inspecci\u00f3n del heap est\u00e9 disponible, esto podr\u00eda permitir la recuperaci\u00f3n de valores de \u2019pad\u2019 u otro material de autenticaci\u00f3n de regiones de memoria liberadas. Este es un requisito de defensa en profundidad consistente con el trabajo de endurecimiento previo en esta base de c\u00f3digo (GHSA-vx6f-rrqr-j87c aplic\u00f3 explicit_bzero a algunas rutas de \u2019pad\u2019; este problema generaliza el patr\u00f3n al asistente de desasignaci\u00f3n central)."}], "id": "CVE-2026-48984", "lastModified": "2026-10-26T11:10:00.157", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48984", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-18T18:47:42.610995Z", "version": "2.0.3"}}]}, "published": "2026-06-18T18:16:19.493", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/mcdope/pam_usb/releases/tag/0.9.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/mcdope/pam_usb/security/advisories/GHSA-rmp6-wfrq-wrrc"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-14"}, {"lang": "en", "value": "CWE-226"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.9.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "pam_usb", "source": "cna", "vendor": "mcdope"}, "product": "pam_usb", "vendor": "mcdope"}], "created": "2026-06-18T20:45:03.218018+00:00", "updated": "2026-06-18T21:30:16.142348+00:00", "vendors": ["mcdope", "mcdope$PRODUCT$pam_usb"]}