CVE-2026-43317 most: core: fix leak on early registration failure

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/most/core.c"
    ],
    "versions": [
      {
        "version": "723de0f9171eeb49a3ae98cae82ebbbb992b3a7c",
        "lessThan": "bbfe49ffb892bddf32c34bea95b7ff0fc30affb5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "723de0f9171eeb49a3ae98cae82ebbbb992b3a7c",
        "lessThan": "f1ba620f9e8d7291f80c0554e4b820f5fb30e819",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "723de0f9171eeb49a3ae98cae82ebbbb992b3a7c",
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        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "723de0f9171eeb49a3ae98cae82ebbbb992b3a7c",
        "lessThan": "2c198c272f9c9213b0fdf6b4a879f445c574f416",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/most/core.c"
    ],
    "versions": [
      {
        "version": "5.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.6",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.75",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.16",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.6",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]