CVE-2024-49926 rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/rcu/tasks.h"
    ],
    "versions": [
      {
        "version": "8610b65680390a103b58f46282a1b05f7eebbba4",
        "lessThan": "b3b2431ed27f4ebc28e26cdf005c1de42dc60bdf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8610b65680390a103b58f46282a1b05f7eebbba4",
        "lessThan": "3104bddc666ff64b90491868bbc4c7ebdd90aedf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8610b65680390a103b58f46282a1b05f7eebbba4",
        "lessThan": "05095271a4fb0f6497121a057f9a2edf386d5d96",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8610b65680390a103b58f46282a1b05f7eebbba4",
        "lessThan": "fd70e9f1d85f5323096ad313ba73f5fe3d15ea41",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/rcu/tasks.h"
    ],
    "versions": [
      {
        "version": "5.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.17",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.60",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.10.14",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.11.3",
        "lessThanOrEqual": "6.11.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]