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

Vulnerability from cvelistv5 – Published: 2025-06-18 11:01 – Updated: 2026-05-11 19:11
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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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Show details on NVD website
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            "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]."
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                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
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                "value": "NVD-CWE-noinfo"
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      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:29:22+00:00",
      "cve": "CVE-2022-50012",
      "id": "CVE-2022-50012",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: powerpc/64: Init jump labels before parse_early_param()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50012.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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