CVE-2022-50250

MEDIUM EPSS 4.3%
Published Sep 15, 20259mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 15, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
4.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel* <4.19.270
linuxlinux_kernel*≥4.20  –  <5.4.229
linuxlinux_kernel*≥5.5  –  <5.10.163
linuxlinux_kernel*≥5.11  –  <5.15.86
linuxlinux_kernel*≥5.16  –  <6.0.16
linuxlinux_kernel*≥6.1  –  <6.1.2

References 7

  • git.kernel.org https://git.kernel.org/stable/c/0591b14ce0398125439c759f889647369aa616a0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4b737246ff50f810d6ab4be13c1388a07f0c14b1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4dd6e1cc9c7403f1ee1b7eee85bc31b797ae8347
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5bfc53df288e8ea54ca6866fb92034214940183f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bc6c381df5793ebcf32db88a3e65acf7870379fc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc3391d49479bc2bf8a2b88dbf86fdd800882fee
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/feb847e6591e8c7a09cc39721cc9ca74fd9a5d80
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0591b14ce0398125439c759f889647369aa616a0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4b737246ff50f810d6ab4be13c1388a07f0c14b1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4dd6e1cc9c7403f1ee1b7eee85bc31b797ae8347
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5bfc53df288e8ea54ca6866fb92034214940183f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bc6c381df5793ebcf32db88a3e65acf7870379fc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dc3391d49479bc2bf8a2b88dbf86fdd800882fee
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/feb847e6591e8c7a09cc39721cc9ca74fd9a5d80
    Patch