CVE-2022-50473

cpufreq: Init completion before kobject_init_and_add()

MEDIUM

5.5

CVSS Score

Published: October 4, 2025 at 03:16 PM UTC

Updated: June 17, 2026 at 05:23 AM UTC

1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: Init completion before kobject_init_and_add() In cpufreq_policy_alloc(), it will call uninitialed completion in cpufreq_sysfs_release() when kobject_init_and_add() fails. And that will cause a crash such as the following page fault in complete: BUG: unable to handle page fault for address: fffffffffffffff8 [..] RIP: 0010:complete+0x98/0x1f0 [..] Call Trace: kobject_put+0x1be/0x4c0 cpufreq_online.cold+0xee/0x1fd cpufreq_add_dev+0x183/0x1e0 subsys_interface_register+0x3f5/0x4e0 cpufreq_register_driver+0x3b7/0x670 acpi_cpufreq_init+0x56c/0x1000 [acpi_cpufreq] do_one_initcall+0x13d/0x780 do_init_module+0x1c3/0x630 load_module+0x6e67/0x73b0 __do_sys_finit_module+0x181/0x240 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v ≥ 5.1.65.1.6 ≤ v < 5.25.1.6 ≤ v < 5.4.2295.11 ≤ v < 5.15.875.16 ≤ v < 6.0.185.2 ≤ v < 5.10.1635.2 ≤ v < 5.15.875.2 ≤ v < 5.4.2295.2 ≤ v < 6.0.185.2 ≤ v < 6.1.45.2 ≤ v < 6.25.5 ≤ v < 5.10.1636.1 ≤ v < 6.1.44ebe36c94aed95de71a8ce6a6762226d31c938ee5.1.6 5.2e977b1477a6725868302957e6b5c330220391797

Vendor states this is fixed in 3cdd91a9163248935720927531066b74f57aa43b (fixed)

Vendor states this is fixed in 5c51054896bcce1d33d39fead2af73fec24f40b6 (fixed)

Vendor states this is fixed in 8fb4c98f20dfca1237de2e3dfdbe78d156784fd3 (fixed)

Vendor states this is fixed in d88540acfc7a17079021d866de914112c396edb1 (fixed)

Vendor states this is fixed in e379b88a8f8cffc99b318e028705ed9e3da0e1e0 (fixed)

Vendor states this is fixed in e7c0c943ed675b66d4bbb16c51c6a3bb58da047e (fixed)

Vendor states this is fixed in 5.10.163 (unaffected)

Vendor states this is fixed in 5.15.87 (unaffected)

Vendor states this is fixed in 5.2 (unaffected)

Vendor states this is fixed in 5.4.229 (unaffected)

Vendor states this is fixed in 6.0.18 (unaffected)

Vendor states this is fixed in 6.1.4 (unaffected)