CVE-2022-50250
Estado: AnalizadaMedia (5.5)—
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).
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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
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 4
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-Other
Referencias
- https://git.kernel.org/stable/c/0591b14ce0398125439c759f889647369aa616a0
- https://git.kernel.org/stable/c/4b737246ff50f810d6ab4be13c1388a07f0c14b1
- https://git.kernel.org/stable/c/4dd6e1cc9c7403f1ee1b7eee85bc31b797ae8347
- https://git.kernel.org/stable/c/5bfc53df288e8ea54ca6866fb92034214940183f
- https://git.kernel.org/stable/c/bc6c381df5793ebcf32db88a3e65acf7870379fc
- https://git.kernel.org/stable/c/dc3391d49479bc2bf8a2b88dbf86fdd800882fee
- https://git.kernel.org/stable/c/feb847e6591e8c7a09cc39721cc9ca74fd9a5d80
JSON original (NVD)
Mostrar
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}
],
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