CVE-2026-31701

{"id": "CVE-2026-31701", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31701", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:24:35.844861Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "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": "4dd821dcbfcecf7af6a08370b0b217cde2818acf", "lessThan": "493b3a682ededc804555755f5d2193201339612d", "versionType": "git"}, {"status": "affected", "version": "cadf1d8e9ddcd74584ec961aeac14ac549b261d8", "lessThan": "dbcf7588e8dea017ddb3f18ec2766f7d2e5f2a0e", "versionType": "git"}, {"status": "affected", "version": "237f3faf0177bdde728fa3106d730d806436aa4d", "lessThan": "ac7345f68cda6989016d85d63f7b244c064aa8f6", "versionType": "git"}, {"status": "affected", "version": "4507a8b9b30344c5ddd8219945f446d47e966a6d", "lessThan": "f6634af5de728a46792f674a66d7843570cb68f7", "versionType": "git"}, {"status": "affected", "version": "a3f9314752dbb6f6aa1f0f2b4c58243bda800738", "lessThan": "1d9be95aee6c6246a21752e60c9519902649f482", "versionType": "git"}, {"status": "affected", "version": "b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c", "lessThan": "6473ed16df1fe88051140611b3eb9a49be7f429e", "versionType": "git"}, {"status": "affected", "version": "b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c", "lessThan": "59b622a043cffc58b7638cd85ae6c30a0904f8e6", "versionType": "git"}, {"status": "affected", "version": "b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c", "lessThan": "80bb50e2d459213cccff3111d5ef98ed4238c0d5", "versionType": "git"}, {"status": "affected", "version": "3993edf44d3df7b6e8c753eac6ac8783473fcbab", "versionType": "git"}, {"status": "affected", "version": "ebad462eec93b0f701dfe4de98990e7355283801", "versionType": "git"}, {"status": "affected", "version": "dd0de8cb708951cebf727aa045e8242ba651bb52", "versionType": "git"}, {"status": "affected", "version": "5.10.231", "lessThan": "5.10.258", "versionType": "semver"}, {"status": "affected", "version": "5.15.174", "lessThan": "5.15.209", "versionType": "semver"}, {"status": "affected", "version": "6.1.120", "lessThan": "6.1.175", "versionType": "semver"}, {"status": "affected", "version": "6.6.64", "lessThan": "6.6.136", "versionType": "semver"}, {"status": "affected", "version": "6.12.2", "lessThan": "6.12.84", "versionType": "semver"}, {"status": "affected", "version": "4.19.325", "lessThan": "4.20", "versionType": "semver"}, {"status": "affected", "version": "5.4.287", "lessThan": "5.5", "versionType": "semver"}, {"status": "affected", "version": "6.11.11", "lessThan": "6.12", "versionType": "semver"}], "programFiles": ["sound/usb/caiaq/device.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.13"}, {"status": "unaffected", "version": "0", "lessThan": "6.13", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.136", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.84", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.25", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.2", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["sound/usb/caiaq/device.c"], "defaultStatus": "affected"}]}], "published": "2026-05-01T14:16:20.020", "references": [{"url": "https://git.kernel.org/stable/c/1d9be95aee6c6246a21752e60c9519902649f482", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/493b3a682ededc804555755f5d2193201339612d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/59b622a043cffc58b7638cd85ae6c30a0904f8e6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6473ed16df1fe88051140611b3eb9a49be7f429e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/80bb50e2d459213cccff3111d5ef98ed4238c0d5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ac7345f68cda6989016d85d63f7b244c064aa8f6", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dbcf7588e8dea017ddb3f18ec2766f7d2e5f2a0e", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f6634af5de728a46792f674a66d7843570cb68f7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: caiaq: take a reference on the USB device in create_card()\n\nThe caiaq driver stores a pointer to the parent USB device in\ncdev->chip.dev but never takes a reference on it. The card's\nprivate_free callback, snd_usb_caiaq_card_free(), can run\nasynchronously via snd_card_free_when_closed() after the USB\ndevice has already been disconnected and freed, so any access to\ncdev->chip.dev in that path dereferences a freed usb_device.\n\nOn top of the refcounting issue, the current card_free implementation\ncalls usb_reset_device(cdev->chip.dev). A reset in a free callback\nis inappropriate: the device is going away, the call takes the\ndevice lock in a teardown context, and the reset races with the\ndisconnect path that the callback is already cleaning up after.\n\nTake a reference on the USB device in create_card() with\nusb_get_dev(), drop it with usb_put_dev() in the free callback,\nand remove the usb_reset_device() call."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nALSA: caiaq: tomar una referencia en el dispositivo USB en create_card()\n\nEl controlador caiaq almacena un puntero al dispositivo USB padre en cdev -> chip.dev pero nunca toma una referencia sobre \u00e9l. La devoluci\u00f3n de llamada private_free de la tarjeta, snd_usb_caiaq_card_free(), puede ejecutarse asincr\u00f3nicamente a trav\u00e9s de snd_card_free_when_closed() despu\u00e9s de que el dispositivo USB ya haya sido desconectado y liberado, por lo que cualquier acceso a cdev -> chip.dev en esa ruta desreferencia un usb_device liberado.\n\nAdem\u00e1s del problema de conteo de referencias, la implementaci\u00f3n actual de card_free llama a usb_reset_device(cdev -> chip.dev). Un reinicio en una devoluci\u00f3n de llamada de liberaci\u00f3n es inapropiado: el dispositivo est\u00e1 desapareciendo, la llamada toma el bloqueo del dispositivo en un contexto de desmantelamiento, y el reinicio compite con la ruta de desconexi\u00f3n que la devoluci\u00f3n de llamada ya est\u00e1 limpiando.\n\nTomar una referencia en el dispositivo USB en create_card() con usb_get_dev(), liberarla con usb_put_dev() en la devoluci\u00f3n de llamada de liberaci\u00f3n, y eliminar la llamada a usb_reset_device()."}], "lastModified": "2026-11-11T21:10:00.200", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8B0A7E0E-F6D8-45DB-8CD9-01839FE40A6C", "versionEndExcluding": "6.18.25", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1BD58F1E-7C20-4C0D-92A2-FAC5CBFBE8A8", "versionEndExcluding": "7.0.2", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A3F9505-6B98-4269-8B81-127E55A1BF00"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}