5.5

CVE-2022-50250: regulator: core: fix use_count leakage when handling boot-on

Analyzed
AliasesUBUNTU-CVE-2022-50250DEBIAN-CVE-2022-50250
Published 15-09-2025Last modified 23-05-2026

Vulnerability summary

CVE-2022-50250 is a medium (CVSS 5.5) 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 5 · Related 4
RHSA-2023:6583SUSE-SU-2025:03615-1SUSE-SU-2025:03628-1SUSE-SU-2025:3716-1SUSE-SU-2025:3761-1

Timeline

  1. 15-09-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

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 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

No weakness data has been published for this record.

Affected systems

Version check

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

Ubuntu121 products
  • linuxAll versions (No fix recorded) | < 5.4.0-144.161 | < 5.15.0-69.76
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 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≥ dc1b1d7faf616ed663d0bba9be5abb4d1ed35d01, < dc3391d49479bc2bf8a2b88dbf86fdd800882fee | ≥ f44b07472f29ae313ce875dc7b9c75b100c608b8, < 5bfc53df288e8ea54ca6866fb92034214940183f | ≥ 089b3f61ecfc43ca4ea26d595e1d31ead6de3f7b, < 4b737246ff50f810d6ab4be13c1388a07f0c14b1 | ≥ 089b3f61ecfc43ca4ea26d595e1d31ead6de3f7b, < feb847e6591e8c7a09cc39721cc9ca74fd9a5d80 | ≥ 089b3f61ecfc43ca4ea26d595e1d31ead6de3f7b, < 4dd6e1cc9c7403f1ee1b7eee85bc31b797ae8347 | ≥ 089b3f61ecfc43ca4ea26d595e1d31ead6de3f7b, < bc6c381df5793ebcf32db88a3e65acf7870379fc | ≥ 089b3f61ecfc43ca4ea26d595e1d31ead6de3f7b, < 0591b14ce0398125439c759f889647369aa616a0 | ≥ 4.19.226, < 4.19.270 | ≥ 5.4.7, < 5.4.229 | 5.5
  • linux_kernel< 4.19.270 | ≥ 4.20, < 5.4.229 | ≥ 5.5, < 5.10.163 | ≥ 5.11, < 5.15.86 | ≥ 5.16, < 6.0.16 | ≥ 6.1, < 6.1.2
Debian1 product
  • linux< 6.1.4-1

3 vendors · 124 products

References

11 links
Show all 11 references