CVE-2026-89956 s390/vfio-ap: Fix missing lock required to access list of ap_matrix_mdev objects

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/s390/crypto/vfio_ap_ops.c"
    ],
    "versions": [
      {
        "version": "2c1ee8983aa377fef4f725162f4f3aa5f9575d4a",
        "lessThan": "647916988272fe5ecb4bb30cd02b51af9960618a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2c1ee8983aa377fef4f725162f4f3aa5f9575d4a",
        "lessThan": "0fd74477d05743d4cd9b25a3b667daa278d53b93",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2c1ee8983aa377fef4f725162f4f3aa5f9575d4a",
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        "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/s390/crypto/vfio_ap_ops.c"
    ],
    "versions": [
      {
        "version": "6.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.0",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.51",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.5",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]