CVE-2024-36932

{"id": "CVE-2024-36932", "metrics": {"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}]}, "published": "2024-05-30T16:15:16.383", "references": [{"url": "https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11da", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal/debugfs: Prevent use-after-free from occurring after cdev removal\n\nSince thermal_debug_cdev_remove() does not run under cdev->lock, it can\nrun in parallel with thermal_debug_cdev_state_update() and it may free\nthe struct thermal_debugfs object used by the latter after it has been\nchecked against NULL.\n\nIf that happens, thermal_debug_cdev_state_update() will access memory\nthat has been freed already causing the kernel to crash.\n\nAddress this by using cdev->lock in thermal_debug_cdev_remove() around\nthe cdev->debugfs value check (in case the same cdev is removed at the\nsame time in two different threads) and its reset to NULL.\n\nCc :6.8+ <stable@vger.kernel.org> # 6.8+"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Thermal/debugfs: evita que se produzca use after free despu\u00e9s de la eliminaci\u00f3n de cdev. Dado que Thermal_debug_cdev_remove() no se ejecuta bajo cdev-&gt;lock, puede ejecutarse en paralelo con Thermal_debug_cdev_state_update() y puede liberar el objeto struct Thermal_debugfs utilizado por este \u00faltimo despu\u00e9s de haberlo verificado con NULL. Si eso sucede, Thermal_debug_cdev_state_update() acceder\u00e1 a la memoria que ya ha sido liberada, lo que provocar\u00e1 que el kernel falle. Solucione esto usando cdev-&gt;lock en Thermal_debug_cdev_remove() alrededor de la verificaci\u00f3n del valor de cdev-&gt;debugfs (en caso de que el mismo cdev se elimine al mismo tiempo en dos subprocesos diferentes) y se restablezca a NULL. CC :6.8+ # 6.8+"}], "lastModified": "2024-06-10T19:20:40.977", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B0D3E543-9D44-48EC-AEFE-B1F1DE163D83", "versionEndExcluding": "6.8.10", "versionStartIncluding": "6.8"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}