CVE-2022-50012 (GCVE-0-2022-50012)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:01 – Updated: 2025-12-23 13:26
VLAI?
Title
powerpc/64: Init jump labels before parse_early_param()
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.]
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 91cc470e797828d779cd4c1efbe8519bcb358bae , < e3c9e9452a8ea12d335b1e59b2c72e1b99c699b8 (git)
Affected: 91cc470e797828d779cd4c1efbe8519bcb358bae , < 8f9357313cdcadb0a311b44c29d4eaccc7fa632f (git)
Affected: 91cc470e797828d779cd4c1efbe8519bcb358bae , < ca829e05d3d4f728810cc5e4b468d9ebc7745eb3 (git)
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    Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.63 , ≤ 5.15.* (semver)
Unaffected: 5.19.4 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/kernel/prom.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
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              "version": "5.15"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "version": "5.15.63",
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              "lessThanOrEqual": "5.19.*",
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              "version": "5.19.4",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
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                  "versionStartIncluding": "5.15",
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              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "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.]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-23T13:26:26.885Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/e3c9e9452a8ea12d335b1e59b2c72e1b99c699b8"
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        {
          "url": "https://git.kernel.org/stable/c/8f9357313cdcadb0a311b44c29d4eaccc7fa632f"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca829e05d3d4f728810cc5e4b468d9ebc7745eb3"
        }
      ],
      "title": "powerpc/64: Init jump labels before parse_early_param()",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50012",
    "datePublished": "2025-06-18T11:01:16.857Z",
    "dateReserved": "2025-06-18T10:57:27.388Z",
    "dateUpdated": "2025-12-23T13:26:26.885Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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