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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于处理boot-on时存在use_count泄漏，可能导致供应调节器无法正常禁用。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux dc1b1d7faf616ed663d0bba9be5abb4d1ed35d01< dc3391d49479bc2bf8a2b88dbf86fdd800882fee affected
f44b07472f29ae313ce875dc7b9c75b100c608b8< 5bfc53df288e8ea54ca6866fb92034214940183f affected
089b3f61ecfc43ca4ea26d595e1d31ead6de3f7b< 4b737246ff50f810d6ab4be13c1388a07f0c14b1 affected
089b3f61ecfc43ca4ea26d595e1d31ead6de3f7b< feb847e6591e8c7a09cc39721cc9ca74fd9a5d80 affected
089b3f61ecfc43ca4ea26d595e1d31ead6de3f7b< 4dd6e1cc9c7403f1ee1b7eee85bc31b797ae8347 affected
089b3f61ecfc43ca4ea26d595e1d31ead6de3f7b< bc6c381df5793ebcf32db88a3e65acf7870379fc affected
089b3f61ecfc43ca4ea26d595e1d31ead6de3f7b< 0591b14ce0398125439c759f889647369aa616a0 affected
4.19.226< 4.19.270 affected
… +10 more rows
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I. Basic Information for CVE-2022-50250

Vulnerability Information
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Vulnerability Title
regulator: core: fix use_count leakage when handling boot-on
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于处理boot-on时存在use_count泄漏，可能导致供应调节器无法正常禁用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux dc1b1d7faf616ed663d0bba9be5abb4d1ed35d01 ~ dc3391d49479bc2bf8a2b88dbf86fdd800882fee -
Linux Linux 5.5 -

II. Public POCs for CVE-2022-50250

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III. Intelligence Information for CVE-2022-50250

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Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-50235 9.8 CRITICAL NFSD: Protect against send buffer overflow in NFSv2 READDIR
CVE-2022-50335 9.8 CRITICAL 9p: set req refcount to zero to avoid uninitialized usage
CVE-2023-53192 9.8 CRITICAL vxlan: Fix nexthop hash size
CVE-2023-53253 8.8 HIGH HID: nvidia-shield: Reference hid_device devm allocation of input_dev name
CVE-2023-53226 8.8 HIGH wifi: mwifiex: Fix OOB and integer underflow when rx packets
CVE-2022-50241 8.8 HIGH NFSD: fix use-after-free on source server when doing inter-server copy
CVE-2023-53194 8.4 HIGH fs/ntfs3: Add length check in indx_get_root
CVE-2023-53213 8.1 HIGH wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
CVE-2023-53186 8.1 HIGH skbuff: Fix a race between coalescing and releasing SKBs
CVE-2022-50303 7.8 HIGH drm/amdkfd: Fix double release compute pasid
CVE-2023-53254 7.8 HIGH cacheinfo: Fix shared_cpu_map to handle shared caches at different levels
CVE-2023-53170 7.8 HIGH net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
CVE-2023-53252 7.8 HIGH Bluetooth: use RCU for hci_conn_params and iterate safely in hci_sync
CVE-2023-53176 7.8 HIGH serial: 8250: Reinit port->pm on port specific driver unbind
CVE-2023-53178 7.8 HIGH mm: fix zswap writeback race condition
CVE-2023-53179 7.8 HIGH netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
CVE-2023-53184 7.8 HIGH arm64/sme: Set new vector length before reallocating
CVE-2022-50315 7.8 HIGH ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
CVE-2023-53189 7.8 HIGH ipv6/addrconf: fix a potential refcount underflow for idev
CVE-2023-53216 7.8 HIGH arm64: efi: Make efi_rt_lock a raw_spinlock

Showing top 20 of 210 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50250

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