fkie_cve-2022-50012
Vulnerability from fkie_nvd
Published
2025-06-18 11:15
Modified
2025-11-14 17:00
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/64: Init jump labels before parse_early_param() On 64-bit, calling jump_label_init() in setup_feature_keys() is too late because static keys may be used in subroutines of parse_early_param() which is again subroutine of early_init_devtree(). For example booting with "threadirqs": static_key_enable_cpuslocked(): static key '0xc000000002953260' used before call to jump_label_init() WARNING: CPU: 0 PID: 0 at kernel/jump_label.c:166 static_key_enable_cpuslocked+0xfc/0x120 ... NIP static_key_enable_cpuslocked+0xfc/0x120 LR static_key_enable_cpuslocked+0xf8/0x120 Call Trace: static_key_enable_cpuslocked+0xf8/0x120 (unreliable) static_key_enable+0x30/0x50 setup_forced_irqthreads+0x28/0x40 do_early_param+0xa0/0x108 parse_args+0x290/0x4e0 parse_early_options+0x48/0x5c parse_early_param+0x58/0x84 early_init_devtree+0xd4/0x518 early_setup+0xb4/0x214 So call jump_label_init() just before parse_early_param() in early_init_devtree(). [mpe: Add call trace to change log and minor wording edits.]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4bb1188e2b1ed98fa2b618cc0628ccba63c6c80fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5e14b04c8459afbeea1eeb74e81af86d7b196a4dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8992141cb88f1d99fd11580f4423634700a99240Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f9357313cdcadb0a311b44c29d4eaccc7fa632fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c4ced9fd10073adc854919976b88ad6004271119Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ca829e05d3d4f728810cc5e4b468d9ebc7745eb3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dac28dff90849af4200b8269fcdc84cdc12fa46cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e3c9e9452a8ea12d335b1e59b2c72e1b99c699b8Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
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          "negate": false,
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/64: Init jump labels before parse_early_param()\n\nOn 64-bit, calling jump_label_init() in setup_feature_keys() is too\nlate because static keys may be used in subroutines of\nparse_early_param() which is again subroutine of early_init_devtree().\n\nFor example booting with \"threadirqs\":\n\n  static_key_enable_cpuslocked(): static key \u00270xc000000002953260\u0027 used before call to jump_label_init()\n  WARNING: CPU: 0 PID: 0 at kernel/jump_label.c:166 static_key_enable_cpuslocked+0xfc/0x120\n  ...\n  NIP static_key_enable_cpuslocked+0xfc/0x120\n  LR  static_key_enable_cpuslocked+0xf8/0x120\n  Call Trace:\n    static_key_enable_cpuslocked+0xf8/0x120 (unreliable)\n    static_key_enable+0x30/0x50\n    setup_forced_irqthreads+0x28/0x40\n    do_early_param+0xa0/0x108\n    parse_args+0x290/0x4e0\n    parse_early_options+0x48/0x5c\n    parse_early_param+0x58/0x84\n    early_init_devtree+0xd4/0x518\n    early_setup+0xb4/0x214\n\nSo call jump_label_init() just before parse_early_param() in\nearly_init_devtree().\n\n[mpe: Add call trace to change log and minor wording edits.]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/64: Inicializar etiquetas de salto antes de parse_early_param() En 64 bits, llamar a jump_label_init() en setup_feature_keys() es demasiado tarde porque las claves est\u00e1ticas se pueden usar en subrutinas de parse_early_param(), que a su vez es una subrutina de early_init_devtree(). Por ejemplo, al arrancar con \"threadirqs\": static_key_enable_cpuslocked(): clave est\u00e1tica \u00270xc000000002953260\u0027 usada antes de llamar a jump_label_init() ADVERTENCIA: CPU: 0 PID: 0 en kernel/jump_label.c:166 static_key_enable_cpuslocked+0xfc/0x120 ... NIP static_key_enable_cpuslocked+0xfc/0x120 LR static_key_enable_cpuslocked+0xf8/0x120 Rastreo de llamadas: static_key_enable_cpuslocked+0xf8/0x120 (no confiable) static_key_enable+0x30/0x50 setup_forced_irqthreads+0x28/0x40 do_early_param+0xa0/0x108 parse_args+0x290/0x4e0 parse_early_options+0x48/0x5c parse_early_param+0x58/0x84 early_init_devtree+0xd4/0x518 early_setup+0xb4/0x214 Por lo tanto, llame a jump_label_init() justo antes de parse_early_param() en early_init_devtree(). [mpe: Agregar seguimiento de llamadas al registro de cambios y ediciones menores de redacci\u00f3n]."
    }
  ],
  "id": "CVE-2022-50012",
  "lastModified": "2025-11-14T17:00:25.620",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-06-18T11:15:29.213",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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