5.5

CVE-2022-50473: cpufreq: Init completion before kobject_init_and_add()

Analyzed
AliasesUBUNTU-CVE-2022-50473DEBIAN-CVE-2022-50473
Published 04-10-2025Last modified 23-05-2026

Vulnerability summary

CVE-2022-50473 is a medium (CVSS 5.5) Use of Uninitialized Resource vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3
RHSA-2020:1769RHSA-2023:6583RHSA-2023:7077

Timeline

  1. 04-10-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

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

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu116 products
  • linux< 5.4.0-144.161 | < 5.15.0-69.76
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1097.105 | < 5.15.0-1033.37
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 4ebe36c94aed95de71a8ce6a6762226d31c938ee, < 3cdd91a9163248935720927531066b74f57aa43b | ≥ 4ebe36c94aed95de71a8ce6a6762226d31c938ee, < e379b88a8f8cffc99b318e028705ed9e3da0e1e0 | ≥ 4ebe36c94aed95de71a8ce6a6762226d31c938ee, < 8fb4c98f20dfca1237de2e3dfdbe78d156784fd3 | ≥ 4ebe36c94aed95de71a8ce6a6762226d31c938ee, < d88540acfc7a17079021d866de914112c396edb1 | ≥ 4ebe36c94aed95de71a8ce6a6762226d31c938ee, < e7c0c943ed675b66d4bbb16c51c6a3bb58da047e | ≥ 4ebe36c94aed95de71a8ce6a6762226d31c938ee, < 5c51054896bcce1d33d39fead2af73fec24f40b6 | e977b1477a6725868302957e6b5c330220391797 | ≥ 5.1.6, < 5.2 | 5.2
  • linux_kernel≥ 5.1.6, < 5.4.229 | ≥ 5.5, < 5.10.163 | ≥ 5.11, < 5.15.87 | ≥ 5.16, < 6.0.18 | ≥ 6.1, < 6.1.4
Debian1 product
  • linux< 6.1.4-1

3 vendors · 119 products

References

10 links