CVE-2022-50012None▾ Sunlit

powerpc/64: Init jump labels before parse_early_param()

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 sub…

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score3/ 100 · Minimal

impact 2.8 · likelihood 0 · exploitation 0

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Proof of concept

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Published

Jun 18, 2025

Updated

Nov 5, 2026

CVSS

—

Vendor

Linux

Product

Linux

CWE

—

Depth score

3 · Minimal

EPSS

0.25% · p16

Platforms

—

Source

CVEORG

Vector

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CISA SSVC

decided 2026-11-05

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Nov 5.

0.2% → 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 505 days

Jun 18, 2025Published
Disclosed via CVEORG
Nov 5, 2026Record revised
Last analysed / modified upstream
Nov 5, 2026EPSS first tracked
0.2%

Linux #cve.org

Affected

Linux >= 91cc470e797828d779cd4c1efbe8519bcb358bae < e3c9e9452a8ea12d335b1e59b2c72e1b99c699b8
Linux >= 91cc470e797828d779cd4c1efbe8519bcb358bae < 8f9357313cdcadb0a311b44c29d4eaccc7fa632f
Linux >= 91cc470e797828d779cd4c1efbe8519bcb358bae < ca829e05d3d4f728810cc5e4b468d9ebc7745eb3
Linux 5.15

Full technical detail▾

Overview

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.]

Affected

Linux >= 91cc470e797828d779cd4c1efbe8519bcb358bae < e3c9e9452a8ea12d335b1e59b2c72e1b99c699b8
Linux >= 91cc470e797828d779cd4c1efbe8519bcb358bae < 8f9357313cdcadb0a311b44c29d4eaccc7fa632f
Linux >= 91cc470e797828d779cd4c1efbe8519bcb358bae < ca829e05d3d4f728810cc5e4b468d9ebc7745eb3
Linux 5.15

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#cve.org

powerpc/64: Init jump labels before parse_early_param()

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score3/ 100 · Minimal

impact 2.8 · likelihood 0 · exploitation 0

Overview

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":

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.]