CVE-2025-39861

{"id": "CVE-2025-39861", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-39861", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-01-14T19:23:17.100703Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "ab4e4380d4e158486e595013a2635190e07e28ce", "lessThan": "bd75eba88e88d7b896b0c737b02a74a12afc235f", "versionType": "git"}, {"status": "affected", "version": "ab4e4380d4e158486e595013a2635190e07e28ce", "lessThan": "1503756fffe76d5aea2371a4b8dee20c3577bcfd", "versionType": "git"}, {"status": "affected", "version": "ab4e4380d4e158486e595013a2635190e07e28ce", "lessThan": "7cc08f2f127b9a66f46ea918e34353811a7cb378", "versionType": "git"}, {"status": "affected", "version": "ab4e4380d4e158486e595013a2635190e07e28ce", "lessThan": "28010791193a4503f054e8d69a950ef815deb539", "versionType": "git"}], "programFiles": ["drivers/bluetooth/hci_vhci.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.4"}, {"status": "unaffected", "version": "0", "lessThan": "6.4", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.105", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.46", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.16.6", "versionType": "semver", "lessThanOrEqual": "6.16.*"}, {"status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/bluetooth/hci_vhci.c"], "defaultStatus": "affected"}]}], "published": "2025-09-19T16:15:45.100", "references": [{"url": "https://git.kernel.org/stable/c/1503756fffe76d5aea2371a4b8dee20c3577bcfd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/28010791193a4503f054e8d69a950ef815deb539", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7cc08f2f127b9a66f46ea918e34353811a7cb378", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bd75eba88e88d7b896b0c737b02a74a12afc235f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: vhci: Prevent use-after-free by removing debugfs files early\n\nMove the creation of debugfs files into a dedicated function, and ensure\nthey are explicitly removed during vhci_release(), before associated\ndata structures are freed.\n\nPreviously, debugfs files such as \"force_suspend\", \"force_wakeup\", and\nothers were created under hdev->debugfs but not removed in\nvhci_release(). Since vhci_release() frees the backing vhci_data\nstructure, any access to these files after release would result in\nuse-after-free errors.\n\nAlthough hdev->debugfs is later freed in hci_release_dev(), user can\naccess files after vhci_data is freed but before hdev->debugfs is\nreleased."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nBluetooth: vhci: Prevenir uso despu\u00e9s de liberaci\u00f3n al eliminar los archivos debugfs tempranamente\n\nMover la creaci\u00f3n de archivos debugfs a una funci\u00f3n dedicada, y asegurar que sean eliminados expl\u00edcitamente durante vhci_release(), antes de que se liberen las estructuras de datos asociadas.\n\nAnteriormente, los archivos debugfs como 'force_suspend', 'force_wakeup' y otros se creaban bajo hdev->debugfs pero no se eliminaban en vhci_release(). Dado que vhci_release() libera la estructura de datos subyacente vhci_data, cualquier acceso a estos archivos despu\u00e9s de la liberaci\u00f3n resultar\u00eda en errores de uso despu\u00e9s de liberaci\u00f3n.\n\nAunque hdev->debugfs se libera posteriormente en hci_release_dev(), el usuario puede acceder a los archivos despu\u00e9s de que vhci_data sea liberado pero antes de que hdev->debugfs sea liberado."}], "lastModified": "2026-10-19T21:10:00.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "603F7CF8-91E9-4EFF-B6E9-FDFAAD35507E", "versionEndExcluding": "6.6.105", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F7E2B332-E920-4CAC-B400-288602DB6F16", "versionEndExcluding": "6.12.46", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "548F104C-0F08-438B-9C97-64C903F0C678", "versionEndExcluding": "6.16.6", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "340BEEA9-D70D-4290-B502-FBB1032353B1"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}