CVE-2024-35247

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This approach is problematic since it can\nlead to a null pointer dereference while attempting to get the region\nduring programming if the parent device does not have a driver.\n\nTo address this problem, add a module owner pointer to the fpga_region\nstruct and use it to take the module's refcount. Modify the functions for\nregistering a region to take an additional owner module parameter and\nrename them to avoid conflicts. Use the old function names for helper\nmacros that automatically set the module that registers the region as the\nowner. 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La implementaci\u00f3n actual de la regi\u00f3n fpga supone que el m\u00f3dulo de bajo nivel registra un controlador para el dispositivo principal y utiliza su puntero de propietario para tomar el recuento del m\u00f3dulo. Este enfoque es problem\u00e1tico ya que puede provocar una desreferencia del puntero nulo al intentar obtener la regi\u00f3n durante la programaci\u00f3n si el dispositivo principal no tiene un controlador. Para solucionar este problema, agregue un puntero de propietario de m\u00f3dulo a la estructura fpga_region y util\u00edcelo para obtener el recuento del m\u00f3dulo. Modifique las funciones para registrar una regi\u00f3n para tomar un par\u00e1metro de m\u00f3dulo de propietario adicional y cambiarles el nombre para evitar conflictos. Utilice los nombres de funciones antiguos para las macros auxiliares que configuran autom\u00e1ticamente el m\u00f3dulo que registra la regi\u00f3n como propietario. Esto garantiza la compatibilidad con los m\u00f3dulos de control de bajo nivel existentes y reduce las posibilidades de registrar una regi\u00f3n sin configurar el propietario. Adem\u00e1s, actualice la documentaci\u00f3n para que sea coherente con la nueva interfaz para registrar una regi\u00f3n fpga."}], "id": "CVE-2024-35247", "lastModified": "2026-06-17T07:34:37.237", "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-2024-35247", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T17:08:36.896570Z", "version": "2.0.3"}}]}, "published": "2024-06-24T14:15:12.050", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2279c09c36165ccded4d506d11a7714e13b56019"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/26e6e25d742e29885cf44274fcf6b744366c4702"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4d7d12b643c00e7eea51b49a60a2ead182633ec8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/75a001914a8d2ccdcbe4b8cc7e94ac71d0e66093"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9b4eee8572dcf82b2ed17d9a328c7fb87df2f0e8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b7c0e1ecee403a43abc89eb3e75672b01ff2ece9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2279c09c36165ccded4d506d11a7714e13b56019"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/26e6e25d742e29885cf44274fcf6b744366c4702"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4d7d12b643c00e7eea51b49a60a2ead182633ec8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/75a001914a8d2ccdcbe4b8cc7e94ac71d0e66093"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9b4eee8572dcf82b2ed17d9a328c7fb87df2f0e8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b7c0e1ecee403a43abc89eb3e75672b01ff2ece9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: fpga: region: add owner module and take its refcount", "id": "2294213", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2294213"}, "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:\nfpga: region: add owner module and take its refcount\nThe current implementation of the fpga region assumes that the low-level\nmodule registers a driver for the parent device and uses its owner pointer\nto take the module's refcount. This approach is problematic since it can\nlead to a null pointer dereference while attempting to get the region\nduring programming if the parent device does not have a driver.\nTo address this problem, add a module owner pointer to the fpga_region\nstruct and use it to take the module's refcount. Modify the functions for\nregistering a region to take an additional owner module parameter and\nrename them to avoid conflicts. Use the old function names for helper\nmacros that automatically set the module that registers the region as the\nowner. This ensures compatibility with existing low-level control modules\nand reduces the chances of registering a region without setting the owner.\nAlso, update the documentation to keep it consistent with the new interface\nfor registering an fpga region."], "name": "CVE-2024-35247", "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": "2024-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-35247\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35247\nhttps://lore.kernel.org/linux-cve-announce/2024062459-CVE-2024-35247-713a@gregkh/T"], "threat_severity": "Low"}

{}