CVE-2024-50021

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The function calls ice_dpll_get_pins(),\nwhich increments the reference count of the relevant resources. However,\nif the condition WARN_ON((!vsi || !vsi->netdev)) is met, the function\ncurrently returns an error without properly releasing the resources\nacquired by ice_dpll_get_pins(), leading to a reference count leak.\n\nTo resolve this, the check has been moved to the top of the function. This\nensures that the function verifies the state before any resources are\nacquired, avoiding the need for additional resource management in the\nerror path.\n\nThis bug was identified by an experimental static analysis tool developed\nby our team. The tool specializes in analyzing reference count operations\nand detecting potential issues where resources are not properly managed.\nIn this case, the tool flagged the missing release operation as a\npotential problem, which led to the development of this patch."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ice: Se corrige el manejo incorrecto de refcount en ice_dpll_init_rclk_pins() Este parche soluciona un problema de manejo de recuento de referencias en la funci\u00f3n ice_dpll_init_rclk_pins(). La funci\u00f3n llama a ice_dpll_get_pins(), que incrementa el recuento de referencias de los recursos relevantes. Sin embargo, si se cumple la condici\u00f3n WARN_ON((!vsi || !vsi->netdev)), la funci\u00f3n actualmente devuelve un error sin liberar correctamente los recursos adquiridos por ice_dpll_get_pins(), lo que lleva a una p\u00e9rdida de recuento de referencias. Para resolver esto, la comprobaci\u00f3n se ha movido a la parte superior de la funci\u00f3n. Esto garantiza que la funci\u00f3n verifique el estado antes de que se adquieran recursos, lo que evita la necesidad de una gesti\u00f3n de recursos adicional en la ruta de error. Este error fue identificado por una herramienta de an\u00e1lisis est\u00e1tico experimental desarrollada por nuestro equipo. La herramienta se especializa en analizar operaciones de recuento de referencias y detectar posibles problemas donde los recursos no se administran correctamente. En este caso, la herramienta marc\u00f3 la operaci\u00f3n de liberaci\u00f3n faltante como un problema potencial, lo que llev\u00f3 al desarrollo de este parche."}], "id": "CVE-2024-50021", "lastModified": "2026-06-17T08:03:23.837", "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-2024-50021", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-22T13:27:23.008969Z", "version": "2.0.3"}}]}, "published": "2024-10-21T20:15:15.630", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aefecead9d08f4a35ab6f51ba2e408d2cef4e31d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ccca30a18e36a742e606d5bf0630e75be7711d0a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins()", "id": "2320600", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320600"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nice: Fix improper handling of refcount in ice_dpll_init_rclk_pins()\nThis patch addresses a reference count handling issue in the\nice_dpll_init_rclk_pins() function. The function calls ice_dpll_get_pins(),\nwhich increments the reference count of the relevant resources. However,\nif the condition WARN_ON((!vsi || !vsi->netdev)) is met, the function\ncurrently returns an error without properly releasing the resources\nacquired by ice_dpll_get_pins(), leading to a reference count leak.\nTo resolve this, the check has been moved to the top of the function. This\nensures that the function verifies the state before any resources are\nacquired, avoiding the need for additional resource management in the\nerror path.\nThis bug was identified by an experimental static analysis tool developed\nby our team. The tool specializes in analyzing reference count operations\nand detecting potential issues where resources are not properly managed.\nIn this case, the tool flagged the missing release operation as a\npotential problem, which led to the development of this patch."], "name": "CVE-2024-50021", "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": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50021\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50021\nhttps://lore.kernel.org/linux-cve-announce/2024102129-CVE-2024-50021-d60d@gregkh/T"], "threat_severity": "Moderate"}

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