CVE-2021-47668 can: dev: can_restart: fix use after free bug

[
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    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/can/dev.c"
    ],
    "versions": [
      {
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      {
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      {
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    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/can/dev.c"
    ],
    "versions": [
      {
        "version": "2.6.31",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.31",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "4.4.254",
        "lessThanOrEqual": "4.4.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "4.9.254",
        "lessThanOrEqual": "4.9.*",
        "status": "unaffected",
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      },
      {
        "version": "4.14.218",
        "lessThanOrEqual": "4.14.*",
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      },
      {
        "version": "4.19.171",
        "lessThanOrEqual": "4.19.*",
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      },
      {
        "version": "5.4.93",
        "lessThanOrEqual": "5.4.*",
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      },
      {
        "version": "5.10.11",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]