CVE-2022-50250

Medium

In the Linux kernel, the following vulnerability has been resolved: regulator: core: fix use_count leakage when handling boot-on I found a use_count leakage towards supply regulator of rdev with boot-on option. ┌───────────────────┐ ┌───────────────────┐ │ regulator_dev A │ │ regulator_dev B │ │ (boot-on) │ │ (boot-on) │ │ use_count=0 │◀──supply──│ use_count=1 │ │ │ │ │ └───────────────────┘ └───────────────────┘ In case of rdev(A) configured with `regulator-boot-on', the use_count of supplying regulator(B) will increment inside regulator_enable(rdev->supply). Thus, B will acts like always-on, and further balanced regulator_enable/disable cannot actually disable it anymore. However, B was also configured with `regulator-boot-on', we wish it could be disabled afterwards.

Package Linux Kernel
Published 2025-09-15
Last modified 2025-11-25
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 4.19.226, 5.4.7, 5.5 and later are affected. Fixed in 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2 and their respective stable series.

Affected from
≥ 4.19.226 ≥ 5.4.7 ≥ 5.5
Fixed in
✓ 4.19.270 4.19.x ✓ 5.4.229 5.4.x ✓ 5.10.163 5.10.x ✓ 5.15.86 5.15.x ✓ 6.0.16 6.0.x ✓ 6.1.2 6.1.x ✓ 6.2

References

The following references provide additional information about CVE-2022-50250 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

7 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2022-50250?

    CVE-2022-50250 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.19.226 onward and has been patched in 4.19.270, 5.4.229, 5.10.163 and others. CVE-2022-50250 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2022-50250?

    CVE-2022-50250 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2022-50250?

    Yes — CVE-2022-50250 has been patched. Fixed versions include 4.19.270, 5.4.229, 5.10.163 and others. If you are running Linux kernel 4.19.226 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2022-50250 actively exploited?

    No — CVE-2022-50250 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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