cve-2024-36932
Vulnerability from cvelistv5
Published
2024-05-30 15:29
Modified
2024-08-02 03:43
Severity
Summary
thermal/debugfs: Prevent use-after-free from occurring after cdev removal
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11daPatch
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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                "versionType": "custom"
              },
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                "version": "6.8.10"
              },
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                "options": [
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                    "Automatable": "no"
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                "role": "CISA Coordinator",
                "timestamp": "2024-06-07T14:04:33.823483Z",
                "version": "2.0.3"
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        "title": "CISA ADP Vulnrichment"
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        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
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          "product": "Linux",
          "programFiles": [
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          ],
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          "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-\u003elock, 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-\u003elock in thermal_debug_cdev_remove() around\nthe cdev-\u003edebugfs 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+ \u003cstable@vger.kernel.org\u003e # 6.8+"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-36932",
    "datePublished": "2024-05-30T15:29:23.178Z",
    "dateReserved": "2024-05-30T15:25:07.071Z",
    "dateUpdated": "2024-08-02T03:43:50.540Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-36932\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-30T16:15:16.383\",\"lastModified\":\"2024-06-10T19:20:40.977\",\"vulnStatus\":\"Analyzed\",\"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-\u003elock, 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-\u003elock in thermal_debug_cdev_remove() around\\nthe cdev-\u003edebugfs 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+ \u003cstable@vger.kernel.org\u003e # 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-\u0026gt;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-\u0026gt;lock en Thermal_debug_cdev_remove() alrededor de la verificaci\u00f3n del valor de cdev-\u0026gt;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+\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8\",\"versionEndExcluding\":\"6.8.10\",\"matchCriteriaId\":\"B0D3E543-9D44-48EC-AEFE-B1F1DE163D83\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11da\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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