{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "973207ae3d7c3c92df4a382df5d7bd695deaa904"
            },
            {
              "fixed": "a1850e2aef4d15405e7ff53fd51c4b3124d46182"
            },
            {
              "fixed": "d20d48916ce8531b157c2edeba76d69af2974270"
            },
            {
              "fixed": "6b050482ec40569429d963ac52afa878691b04c9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.16.0"
            },
            {
              "fixed": "6.18.17"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23332.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: intel_pstate: Fix crash during turbo disable\n\nWhen the system is booted with kernel command line argument \"nosmt\" or\n\"maxcpus\" to limit the number of CPUs, disabling turbo via:\n\n echo 1 \u003e /sys/devices/system/cpu/intel_pstate/no_turbo\n\nresults in a crash:\n\n PF: supervisor read access in kernel mode\n PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: Oops: 0000 [#1] SMP PTI\n ...\n RIP: 0010:store_no_turbo+0x100/0x1f0\n ...\n\nThis occurs because for_each_possible_cpu() returns CPUs even if they\nare not online. For those CPUs, all_cpu_data[] will be NULL. Since\ncommit 973207ae3d7c (\"cpufreq: intel_pstate: Rearrange max frequency\nupdates handling code\"), all_cpu_data[] is dereferenced even for CPUs\nwhich are not online, causing the NULL pointer dereference.\n\nTo fix that, pass CPU number to intel_pstate_update_max_freq() and use\nall_cpu_data[] for those CPUs for which there is a valid cpufreq policy.",
  "id": "CVE-2026-23332",
  "modified": "2026-04-01T23:07:58.477107879Z",
  "published": "2026-03-25T10:27:23.193Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6b050482ec40569429d963ac52afa878691b04c9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a1850e2aef4d15405e7ff53fd51c4b3124d46182"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d20d48916ce8531b157c2edeba76d69af2974270"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23332.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23332"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "cpufreq: intel_pstate: Fix crash during turbo disable"
}