CVE-2023-52627

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Those drivers declared iio events for notifying\nuser space when ADC readings fall bellow the thresholds of low limit\nregisters or above the values set in high limit registers.\nHowever, to configure iio events and their thresholds, a set of callback\nfunctions must be implemented and those were not present until now.\nThe consequence of trying to configure ad7091r-5 events without the\nproper callback functions was a null pointer dereference in the kernel\nbecause the pointers to the callback functions were not set.\n\nImplement event configuration callbacks allowing users to read/write\nevent thresholds and enable/disable event generation.\n\nSince the event spec structs are generic to AD7091R devices, also move\nthose from the ad7091r-5 driver the base driver so they can be reused\nwhen support for ad7091r-2/-4/-8 be added."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": 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Those drivers declared iio events for notifying\nuser space when ADC readings fall bellow the thresholds of low limit\nregisters or above the values set in high limit registers.\nHowever, to configure iio events and their thresholds, a set of callback\nfunctions must be implemented and those were not present until now.\nThe consequence of trying to configure ad7091r-5 events without the\nproper callback functions was a null pointer dereference in the kernel\nbecause the pointers to the callback functions were not set.\n\nImplement event configuration callbacks allowing users to read/write\nevent thresholds and enable/disable event generation.\n\nSince the event spec structs are generic to AD7091R devices, also move\nthose from the ad7091r-5 driver the base driver so they can be reused\nwhen support for ad7091r-2/-4/-8 be added."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.210", "versionStartIncluding": "5.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.149", "versionStartIncluding": "5.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.76", "versionStartIncluding": "5.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.15", "versionStartIncluding": "5.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7.3", "versionStartIncluding": "5.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8", "versionStartIncluding": "5.6"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:40:16.719Z"}}}, "cveMetadata": {"cveId": "CVE-2023-52627", "state": "PUBLISHED", "dateUpdated": "2025-05-04T07:40:16.719Z", "dateReserved": "2024-03-06T09:52:12.091Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-03-26T17:49:59.834Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

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Those drivers declared iio events for notifying\nuser space when ADC readings fall bellow the thresholds of low limit\nregisters or above the values set in high limit registers.\nHowever, to configure iio events and their thresholds, a set of callback\nfunctions must be implemented and those were not present until now.\nThe consequence of trying to configure ad7091r-5 events without the\nproper callback functions was a null pointer dereference in the kernel\nbecause the pointers to the callback functions were not set.\n\nImplement event configuration callbacks allowing users to read/write\nevent thresholds and enable/disable event generation.\n\nSince the event spec structs are generic to AD7091R devices, also move\nthose from the ad7091r-5 driver the base driver so they can be reused\nwhen support for ad7091r-2/-4/-8 be added."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: iio: adc: ad7091r: permitir a los usuarios configurar eventos de dispositivo Los dispositivos AD7091R-5 son compatibles con el controlador ad7091r-5 junto con el controlador ad7091r-base. Esos controladores declararon eventos iio para notificar al espacio del usuario cuando las lecturas de ADC caen por debajo de los umbrales de los registros de l\u00edmite bajo o por encima de los valores establecidos en los registros de l\u00edmite alto. Sin embargo, para configurar los eventos de iio y sus umbrales, se debe implementar un conjunto de funciones de devoluci\u00f3n de llamada que no estaban presentes hasta ahora. La consecuencia de intentar configurar eventos ad7091r-5 sin las funciones de devoluci\u00f3n de llamada adecuadas fue una desreferencia del puntero nulo en el kernel porque los punteros a las funciones de devoluci\u00f3n de llamada no estaban configurados. Implemente devoluciones de llamadas de configuraci\u00f3n de eventos que permitan a los usuarios leer/escribir umbrales de eventos y habilitar/deshabilitar la generaci\u00f3n de eventos. Dado que las estructuras de especificaciones de eventos son gen\u00e9ricas para los dispositivos AD7091R, tambi\u00e9n mueva las del controlador ad7091r-5 al controlador base para que puedan reutilizarse cuando se agregue soporte para ad7091r-2/-4/-8."}], "id": "CVE-2023-52627", "lastModified": "2026-06-17T06:43:12.063", "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-52627", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-26T19:53:38.906343Z", "version": "2.0.3"}}]}, "published": "2024-03-26T18:15:09.140", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/020e71c7ffc25dfe29ed9be6c2d39af7bd7f661f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/137568aa540a9f587c48ff7d4c51cdba08cfe9a4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1eba6f7ffa295a0eec098c107043074be7cc4ec5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/49f322ce1f265935f15e5512da69a399f27a5091"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/55aca2ce91a63740278502066beaddbd841af9c6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/89c4e63324e208a23098f7fb15c00487cecbfed2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/020e71c7ffc25dfe29ed9be6c2d39af7bd7f661f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/137568aa540a9f587c48ff7d4c51cdba08cfe9a4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1eba6f7ffa295a0eec098c107043074be7cc4ec5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/49f322ce1f265935f15e5512da69a399f27a5091"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/55aca2ce91a63740278502066beaddbd841af9c6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/89c4e63324e208a23098f7fb15c00487cecbfed2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: iio: adc: ad7091r: Allow users to configure device events", "id": "2271678", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2271678"}, "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-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\niio: adc: ad7091r: Allow users to configure device events\nAD7091R-5 devices are supported by the ad7091r-5 driver together with\nthe ad7091r-base driver. Those drivers declared iio events for notifying\nuser space when ADC readings fall bellow the thresholds of low limit\nregisters or above the values set in high limit registers.\nHowever, to configure iio events and their thresholds, a set of callback\nfunctions must be implemented and those were not present until now.\nThe consequence of trying to configure ad7091r-5 events without the\nproper callback functions was a null pointer dereference in the kernel\nbecause the pointers to the callback functions were not set.\nImplement event configuration callbacks allowing users to read/write\nevent thresholds and enable/disable event generation.\nSince the event spec structs are generic to AD7091R devices, also move\nthose from the ad7091r-5 driver the base driver so they can be reused\nwhen support for ad7091r-2/-4/-8 be added.", "A vulnerability was found in the iio ad7091r-5 ADC driver of Linux Kernel, impacting its ability to configure device events. This occurred because the driver lacked essential pointers to handle event configuration, specifically for ADC readings falling below or exceeding threshold limits."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2023-52627", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52627\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52627\nhttps://lore.kernel.org/linux-cve-announce/20240326175007.1388794-13-lee@kernel.org/T"], "threat_severity": "Moderate"}

{}