GSD-2021-46994

Vulnerability from gsd - Updated: 2024-02-28 06:03
Details
In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix resume from sleep before interface was brought up Since 8ce8c0abcba3 the driver queues work via priv->restart_work when resuming after suspend, even when the interface was not previously enabled. This causes a null dereference error as the workqueue is only allocated and initialized in mcp251x_open(). To fix this we move the workqueue init to mcp251x_can_probe() as there is no reason to do it later and repeat it whenever mcp251x_open() is called. [mkl: fix error handling in mcp251x_stop()]
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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-46994"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: mcp251x: fix resume from sleep before interface was brought up\n\nSince 8ce8c0abcba3 the driver queues work via priv-\u003erestart_work when\nresuming after suspend, even when the interface was not previously\nenabled. This causes a null dereference error as the workqueue is only\nallocated and initialized in mcp251x_open().\n\nTo fix this we move the workqueue init to mcp251x_can_probe() as there\nis no reason to do it later and repeat it whenever mcp251x_open() is\ncalled.\n\n[mkl: fix error handling in mcp251x_stop()]",
      "id": "GSD-2021-46994",
      "modified": "2024-02-28T06:03:57.468747Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2021-46994",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "8ce8c0abcba3",
                          "version_value": "eecb4df8ec9f"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
                              {
                                "status": "affected",
                                "version": "5.5"
                              },
                              {
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                                "status": "unaffected",
                                "version": "0",
                                "versionType": "custom"
                              },
                              {
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                                "status": "unaffected",
                                "version": "5.10.38",
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                                "version": "5.12.5",
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      "data_type": "CVE",
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      "description": {
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            "lang": "eng",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: mcp251x: fix resume from sleep before interface was brought up\n\nSince 8ce8c0abcba3 the driver queues work via priv-\u003erestart_work when\nresuming after suspend, even when the interface was not previously\nenabled. This causes a null dereference error as the workqueue is only\nallocated and initialized in mcp251x_open().\n\nTo fix this we move the workqueue init to mcp251x_can_probe() as there\nis no reason to do it later and repeat it whenever mcp251x_open() is\ncalled.\n\n[mkl: fix error handling in mcp251x_stop()]"
          }
        ]
      },
      "generator": {
        "engine": "bippy-c298863b1525"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
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        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21"
          },
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            "name": "https://git.kernel.org/stable/c/6f8f1c27b577de15f69fefce3c502bb6300d825c",
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            "url": "https://git.kernel.org/stable/c/e1e10a390fd9479209c4d834d916ca5e6d5d396b"
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            "name": "https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0af",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0af"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: mcp251x: fix resume from sleep before interface was brought up\n\nSince 8ce8c0abcba3 the driver queues work via priv-\u003erestart_work when\nresuming after suspend, even when the interface was not previously\nenabled. This causes a null dereference error as the workqueue is only\nallocated and initialized in mcp251x_open().\n\nTo fix this we move the workqueue init to mcp251x_can_probe() as there\nis no reason to do it later and repeat it whenever mcp251x_open() is\ncalled.\n\n[mkl: fix error handling in mcp251x_stop()]"
          }
        ],
        "id": "CVE-2021-46994",
        "lastModified": "2024-02-28T14:06:45.783",
        "metrics": {},
        "published": "2024-02-28T09:15:37.923",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0af"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}


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