CVE-2026-92493 (GCVE-0-2026-92493)
Vulnerability from cvelistv5
Published
2026-09-17 16:10
Modified
2026-10-19 09:03
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: cpufreq: amd-pstate-ut: Skip tests when amd-pstate driver is not active The crash issue may occur when modprobe amd_pstate_ut on intel platform. amd_pstate_ut: 1 amd_pstate_ut_acpi_cpc_valid success! amd_pstate_ut: 2 amd_pstate_ut_check_enabled success! BUG: kernel NULL pointer dereference, address: 0000000000000080 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] SMP NOPTI CPU: 0 PID: 20300 Comm: modprobe Kdump: loaded Tainted: G O 6.6.0-0010.rc1.ctl4.x86_64 #1 Hardware name: FiberHome R2200 V5/Xeon Boards, BIOS 3.1a 02/24/2020 RIP: 0010:amd_pstate_ut_check_perf+0x141/0x280 [amd_pstate_ut] Call Trace: <TASK> amd_pstate_ut_init+0x1b/0xff0 [amd_pstate_ut] ? __pfx_amd_pstate_ut_init+0x10/0x10 [amd_pstate_ut] do_one_initcall+0x42/0x2e0 ? kmalloc_trace+0x26/0x90 do_init_module+0x60/0x240 __se_sys_init_module+0x185/0x1c0 do_syscall_64+0x62/0x190 entry_SYSCALL_64_after_hwframe+0x76/0x7e </TASK> Add state detection to amd pstate driver to prevent amd_pstate_ut driver from testing on non-AMD platforms. (ML: adjust title)
References
Impacted products
Vendor Product Version
Linux Linux Version: 14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015
Version: 14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015
Version: 14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cpufreq/amd-pstate-ut.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "baf5a7fd3f3e2f4297b42b249f4f4f63214f44c0",
              "status": "affected",
              "version": "14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015",
              "versionType": "git"
            },
            {
              "lessThan": "ba6ce23d17db3d114adf13909a9002f1eedcf183",
              "status": "affected",
              "version": "14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015",
              "versionType": "git"
            },
            {
              "lessThan": "8d31bb1451643f328db0cea0e21e63ef54b4faf2",
              "status": "affected",
              "version": "14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/cpufreq/amd-pstate-ut.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: amd-pstate-ut: Skip tests when amd-pstate driver is not active\n\nThe crash issue may occur when modprobe amd_pstate_ut on intel platform.\n\n   amd_pstate_ut: 1    amd_pstate_ut_acpi_cpc_valid  success!\n   amd_pstate_ut: 2    amd_pstate_ut_check_enabled   success!\n   BUG: kernel NULL pointer dereference, address: 0000000000000080\n   #PF: supervisor read access in kernel mode\n   #PF: error_code(0x0000) - not-present page\n   PGD 0 P4D 0\n   Oops: 0000 [#1] SMP NOPTI\n   CPU: 0 PID: 20300 Comm: modprobe\n   Kdump: loaded Tainted: G O 6.6.0-0010.rc1.ctl4.x86_64 #1\n   Hardware name: FiberHome R2200 V5/Xeon Boards, BIOS 3.1a 02/24/2020\n   RIP: 0010:amd_pstate_ut_check_perf+0x141/0x280 [amd_pstate_ut]\n   Call Trace:\n    \u003cTASK\u003e\n    amd_pstate_ut_init+0x1b/0xff0 [amd_pstate_ut]\n    ? __pfx_amd_pstate_ut_init+0x10/0x10 [amd_pstate_ut]\n    do_one_initcall+0x42/0x2e0\n    ? kmalloc_trace+0x26/0x90\n    do_init_module+0x60/0x240\n    __se_sys_init_module+0x185/0x1c0\n    do_syscall_64+0x62/0x190\n    entry_SYSCALL_64_after_hwframe+0x76/0x7e\n    \u003c/TASK\u003e\n\nAdd state detection to amd pstate driver to prevent amd_pstate_ut driver\nfrom testing on non-AMD platforms.\n\n(ML: adjust title)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:03:59.534Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/baf5a7fd3f3e2f4297b42b249f4f4f63214f44c0"
        },
        {
          "url": "https://git.kernel.org/stable/c/ba6ce23d17db3d114adf13909a9002f1eedcf183"
        },
        {
          "url": "https://git.kernel.org/stable/c/8d31bb1451643f328db0cea0e21e63ef54b4faf2"
        }
      ],
      "title": "cpufreq: amd-pstate-ut: Skip tests when amd-pstate driver is not active",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-92493",
    "datePublished": "2026-09-17T16:10:09.008Z",
    "dateReserved": "2026-09-16T12:21:13.871Z",
    "dateUpdated": "2026-10-19T09:03:59.534Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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