CVE-2025-68822

{"id": "CVE-2025-68822", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-68822", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:05:36.678846Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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": "04aae283ba6a8cd4851d937bf9c6d6ef0361d794", "lessThan": "55beb00222af2eee967322670a0c8f3c6426becb", "versionType": "git"}, {"status": "affected", "version": "04aae283ba6a8cd4851d937bf9c6d6ef0361d794", "lessThan": "b9d8cfd6d77f5072a4df10646810d128220457fb", "versionType": "git"}, {"status": "affected", "version": "04aae283ba6a8cd4851d937bf9c6d6ef0361d794", "lessThan": "ed8c61b89be0c45f029228b2913d5cf7b5cda1a7", "versionType": "git"}, {"status": "affected", "version": "04aae283ba6a8cd4851d937bf9c6d6ef0361d794", "lessThan": "a9c115e017b2c633d25bdfe6709dda6fc36f08c2", "versionType": "git"}, {"status": "affected", "version": "04aae283ba6a8cd4851d937bf9c6d6ef0361d794", "lessThan": "bf40644ef8c8a288742fa45580897ed0e0289474", "versionType": "git"}], "programFiles": ["drivers/input/mouse/alps.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.0"}, {"status": "unaffected", "version": "0", "lessThan": "4.0", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.191", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.160", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.64", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.3", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/input/mouse/alps.c"], "defaultStatus": "affected"}]}], "published": "2026-01-13T16:16:04.550", "references": [{"url": "https://git.kernel.org/stable/c/55beb00222af2eee967322670a0c8f3c6426becb", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a9c115e017b2c633d25bdfe6709dda6fc36f08c2", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b9d8cfd6d77f5072a4df10646810d128220457fb", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bf40644ef8c8a288742fa45580897ed0e0289474", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ed8c61b89be0c45f029228b2913d5cf7b5cda1a7", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Deferred", "weaknesses": [{"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\nInput: alps - fix use-after-free bugs caused by dev3_register_work\n\nThe dev3_register_work delayed work item is initialized within\nalps_reconnect() and scheduled upon receipt of the first bare\nPS/2 packet from an external PS/2 device connected to the ALPS\ntouchpad. During device detachment, the original implementation\ncalls flush_workqueue() in psmouse_disconnect() to ensure\ncompletion of dev3_register_work. However, the flush_workqueue()\nin psmouse_disconnect() only blocks and waits for work items that\nwere already queued to the workqueue prior to its invocation. Any\nwork items submitted after flush_workqueue() is called are not\nincluded in the set of tasks that the flush operation awaits.\nThis means that after flush_workqueue() has finished executing,\nthe dev3_register_work could still be scheduled. Although the\npsmouse state is set to PSMOUSE_CMD_MODE in psmouse_disconnect(),\nthe scheduling of dev3_register_work remains unaffected.\n\nThe race condition can occur as follows:\n\nCPU 0 (cleanup path) | CPU 1 (delayed work)\npsmouse_disconnect() |\n psmouse_set_state() |\n flush_workqueue() | alps_report_bare_ps2_packet()\n alps_disconnect() | psmouse_queue_work()\n kfree(priv); // FREE | alps_register_bare_ps2_mouse()\n | priv = container_of(work...); // USE\n | priv->dev3 // USE\n\nAdd disable_delayed_work_sync() in alps_disconnect() to ensure\nthat dev3_register_work is properly canceled and prevented from\nexecuting after the alps_data structure has been deallocated.\n\nThis bug is identified by static analysis."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nEntrada: alps - corrige errores de uso despu\u00e9s de liberaci\u00f3n causados por dev3_register_work\n\nEl elemento de trabajo retrasado dev3_register_work se inicializa dentro de alps_reconnect() y se programa al recibir el primer paquete PS/2 'bare' de un dispositivo PS/2 externo conectado al touchpad ALPS. Durante la desconexi\u00f3n del dispositivo, la implementaci\u00f3n original llama a flush_workqueue() en psmouse_disconnect() para asegurar la finalizaci\u00f3n de dev3_register_work. Sin embargo, la flush_workqueue() en psmouse_disconnect() solo bloquea y espera por elementos de trabajo que ya estaban en cola en la workqueue antes de su invocaci\u00f3n. Cualquier elemento de trabajo enviado despu\u00e9s de que se llama a flush_workqueue() no se incluye en el conjunto de tareas que la operaci\u00f3n de 'flush' espera. Esto significa que despu\u00e9s de que flush_workqueue() ha terminado de ejecutarse, el dev3_register_work a\u00fan podr\u00eda programarse. Aunque el estado de psmouse se establece en PSMOUSE_CMD_MODE en psmouse_disconnect(), la programaci\u00f3n de dev3_register_work permanece inalterada.\n\nLa condici\u00f3n de carrera puede ocurrir de la siguiente manera:\n\nCPU 0 (ruta de limpieza) | CPU 1 (trabajo retrasado)\npsmouse_disconnect() |\n psmouse_set_state() |\n flush_workqueue() | alps_report_bare_ps2_packet()\n alps_disconnect() | psmouse_queue_work()\n kfree(priv); // LIBERAR | alps_register_bare_ps2_mouse()\n | priv = container_of(work...); // USAR\n | priv->dev3 // USAR\n\nA\u00f1adir disable_delayed_work_sync() en alps_disconnect() para asegurar que dev3_register_work se cancele correctamente y se impida su ejecuci\u00f3n despu\u00e9s de que la estructura alps_data haya sido desasignada.\n\nEste error es identificado por an\u00e1lisis est\u00e1tico."}], "lastModified": "2026-10-30T13:18:24.947", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}