CVE-2025-37850
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()
With CONFIG_COMPILE_TEST && !CONFIG_HAVE_CLK, pwm_mediatek_config() has a divide-by-zero in the following line:
due to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate() returns zero.
This is presumably just a theoretical problem: COMPILE_TEST overrides the dependency on RALINK which would select COMMON_CLK. Regardless it's a good idea to check for the error explicitly to avoid divide-by-zero.
Fixes the following warning:
[ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]
Detalles técnicos trazas, registros y código del informe original
do_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm])); drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section
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: 0.30%
- Percentil entre todas las CVEs puntuadas: 21
- 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 (2)
CWE
- CWE-369
Referencias
- https://git.kernel.org/stable/c/4cb15042b5f3ec0474e91cf379120cc597625dbb
- https://git.kernel.org/stable/c/77fb96dbe350e8a5ae4965ff9f6e7049f3966a6b
- https://git.kernel.org/stable/c/7ca59947b5fcf94e7ea4029d1bd0f7c41500a161
- https://git.kernel.org/stable/c/8b9f60725d74b72c238e4437c957d0217746b506
- https://git.kernel.org/stable/c/8ddbec73ea2598d8414e8f7103241b55cf877010
- https://git.kernel.org/stable/c/c343856ff2689ce0afef823592732fc178ef4aac
- https://git.kernel.org/stable/c/e1206d8e1651c9f62e5640b69b14d925b1a0a00a
- https://git.kernel.org/stable/c/e3cf0c38d3ce754ad63005102fcfeb0b7ff3290b
- https://git.kernel.org/stable/c/f3e9cf266c2c103cf071e15d7a17e2c699fff3c5
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\npwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()\n\nWith CONFIG_COMPILE_TEST && !CONFIG_HAVE_CLK, pwm_mediatek_config() has a\ndivide-by-zero in the following line:\n\n\tdo_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm]));\n\ndue to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate()\nreturns zero.\n\nThis is presumably just a theoretical problem: COMPILE_TEST overrides\nthe dependency on RALINK which would select COMMON_CLK. Regardless it's\na good idea to check for the error explicitly to avoid divide-by-zero.\n\nFixes the following warning:\n\n drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section\n\n[ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]"
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pwm: mediatek: Evitar la división por cero en pwm_mediatek_config(). Con CONFIG_COMPILE_TEST y !CONFIG_HAVE_CLK, pwm_mediatek_config() presenta una división por cero en la siguiente línea: do_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm])); debido a que la versión !CONFIG_HAVE_CLK de clk_get_rate() devuelve cero. Se supone que se trata de un problema teórico: COMPILE_TEST anula la dependencia de RALINK, que seleccionaría COMMON_CLK. En cualquier caso, es recomendable comprobar el error explícitamente para evitar la división por cero. Corrige la siguiente advertencia: drivers/pwm/pwm-mediatek.o: advertencia: objtool: .text: final inesperado de sección [ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]"
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