CVE-2023-52736

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Drivers mimic the\nbehavior of hda_codec_driver_probe/remove() found in\nsound/pci/hda/hda_bind.c with their component->probe/remove() instead.\n\nOne of the reasons for that is the expectation of\nsnd_hda_codec_device_new() to receive a valid pointer to an instance of\nstruct snd_card. This expectation can be met only once sound card\ncomponents probing commences.\n\nAs ASoC sound card may be unbound without codec device being actually\nremoved from the system, unsetting ->preset in\nsnd_hda_codec_cleanup_for_unbind() interferes with module unload -> load\nscenario causing null-ptr-deref. Preset is assigned only once, during\ndevice/driver matching whereas ASoC codec driver's module reloading may\noccur several times throughout the lifetime of an audio stack."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: hda: no desarmar el valor predeterminado al limpiar el c\u00f3dec. Varias funciones que participan en la inicializaci\u00f3n y eliminaci\u00f3n del c\u00f3dec son reutilizadas por las implementaciones de controladores de c\u00f3dec ASoC. Los controladores imitan el comportamiento de hda_codec_driver_probe/remove() que se encuentra en sound/pci/hda/hda_bind.c con su componente->probe/remove(). Una de las razones de esto es la expectativa de que snd_hda_codec_device_new() reciba un puntero v\u00e1lido a una instancia de struct snd_card. Esta expectativa s\u00f3lo podr\u00e1 cumplirse una vez que comience la investigaci\u00f3n de los componentes de la tarjeta de sonido. Como la tarjeta de sonido ASoC puede desconectarse sin que el dispositivo c\u00f3dec se elimine realmente del sistema, desarmar ->preset en snd_hda_codec_cleanup_for_unbind() interfiere con la descarga del m\u00f3dulo -> escenario de carga causando null-ptr-deref. El ajuste preestablecido se asigna solo una vez, durante la coincidencia de dispositivo/controlador, mientras que la recarga del m\u00f3dulo del controlador del c\u00f3dec ASoC puede ocurrir varias veces durante la vida \u00fatil de una pila de audio."}], "id": "CVE-2023-52736", "lastModified": "2026-06-17T06:43:27.623", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-52736", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-17T17:37:05.495763Z", "version": "2.0.3"}}]}, "published": "2024-05-21T16:15:13.597", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/427ca2530da8dc61a42620d7113b05e187b6c2c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7fc4e7191eae9d9325511e03deadfdb2224914f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/87978e6ad45a16835cc58234451111091be3c59a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e909f5f2aa55a8f9aa6919cce08015cb0e8d4668"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/427ca2530da8dc61a42620d7113b05e187b6c2c0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7fc4e7191eae9d9325511e03deadfdb2224914f8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/87978e6ad45a16835cc58234451111091be3c59a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e909f5f2aa55a8f9aa6919cce08015cb0e8d4668"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ALSA: hda: Do not unset preset when cleaning up codec", "id": "2282714", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282714"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-459", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nALSA: hda: Do not unset preset when cleaning up codec\nSeveral functions that take part in codec's initialization and removal\nare re-used by ASoC codec drivers implementations. Drivers mimic the\nbehavior of hda_codec_driver_probe/remove() found in\nsound/pci/hda/hda_bind.c with their component->probe/remove() instead.\nOne of the reasons for that is the expectation of\nsnd_hda_codec_device_new() to receive a valid pointer to an instance of\nstruct snd_card. This expectation can be met only once sound card\ncomponents probing commences.\nAs ASoC sound card may be unbound without codec device being actually\nremoved from the system, unsetting ->preset in\nsnd_hda_codec_cleanup_for_unbind() interferes with module unload -> load\nscenario causing null-ptr-deref. Preset is assigned only once, during\ndevice/driver matching whereas ASoC codec driver's module reloading may\noccur several times throughout the lifetime of an audio stack."], "name": "CVE-2023-52736", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52736\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52736\nhttps://lore.kernel.org/linux-cve-announce/2024052100-CVE-2023-52736-ff92@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-12T22:23:46.100097+00:00", "updated": "2025-07-12T22:23:46.100150+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}