CVE-2022-50473

cpufreq: Init completion before kobject_init_and_add()

State: Published
Severity: Not scored
Published: Oct 4, 2025
Updated: May 23, 2026
Reserved: Oct 4, 2025

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

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	4ebe36c94aed95de71a8ce6a6762226d31c938ee to before 3cdd91a9163248935720927531066b74f57aa43bAffected 4ebe36c94aed95de71a8ce6a6762226d31c938ee to before e379b88a8f8cffc99b318e028705ed9e3da0e1e0Affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee to before 8fb4c98f20dfca1237de2e3dfdbe78d156784fd3Affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee to before d88540acfc7a17079021d866de914112c396edb1Affected 4ebe36c94aed95de71a8ce6a6762226d31c938ee to before e7c0c943ed675b66d4bbb16c51c6a3bb58da047eAffected 4ebe36c94aed95de71a8ce6a6762226d31c938ee to before 5c51054896bcce1d33d39fead2af73fec24f40b6Affected e977b1477a6725868302957e6b5c330220391797Affected 5.1.6 to before 5.2Affected
LinuxLinux	5.2Affected before 5.2Not affected 5.4.229 through 5.4.Not affected 5.10.163 through 5.10.Not affected 5.15.87 through 5.15.Not affected 6.0.18 through 6.0.Not affected 6.1.4 through 6.1.*Not affected 6.2 and laterNot affected

Product

Versions

LinuxLinux

4ebe36c94aed95de71a8ce6a6762226d31c938ee to before 3cdd91a9163248935720927531066b74f57aa43bAffected
4ebe36c94aed95de71a8ce6a6762226d31c938ee to before e379b88a8f8cffc99b318e028705ed9e3da0e1e0Affected
4ebe36c94aed95de71a8ce6a6762226d31c938ee to before 8fb4c98f20dfca1237de2e3dfdbe78d156784fd3Affected
4ebe36c94aed95de71a8ce6a6762226d31c938ee to before d88540acfc7a17079021d866de914112c396edb1Affected
4ebe36c94aed95de71a8ce6a6762226d31c938ee to before e7c0c943ed675b66d4bbb16c51c6a3bb58da047eAffected
4ebe36c94aed95de71a8ce6a6762226d31c938ee to before 5c51054896bcce1d33d39fead2af73fec24f40b6Affected
e977b1477a6725868302957e6b5c330220391797Affected
5.1.6 to before 5.2Affected

LinuxLinux

5.2Affected
before 5.2Not affected
5.4.229 through 5.4.*Not affected
5.10.163 through 5.10.*Not affected
5.15.87 through 5.15.*Not affected
6.0.18 through 6.0.*Not affected
6.1.4 through 6.1.*Not affected
6.2 and laterNot affected

References

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