CVE-2023-53472

UNKNOWN 0.0

pwm: lpc32xx: Remove handling of PWM channels

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

In the Linux kernel, the following vulnerability has been resolved: pwm: lpc32xx: Remove handling of PWM channels Because LPC32xx PWM controllers have only a single output which is registered as the only PWM device/channel per controller, it is known in advance that pwm->hwpwm value is always 0. On basis of this fact simplify the code by removing operations with pwm->hwpwm, there is no controls which require channel number as input. Even though I wasn't aware at the time when I forward ported that patch, this fixes a null pointer dereference as lpc32xx->chip.pwms is NULL before devm_pwmchip_add() is called.

Vendor	linux
Product	linux
Ecosystems	Linux Kernel
Industries	Technology
Published	Oct 1, 2025
Last Updated	May 11, 2026

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Affected Versions

Linux / Linux

bb4de81eb940e7027f37a6fd3b7ddcb4403deb56 < abd9b2ee4047ccd980decbf26d61f9637604b1d5 4459118977665f681017e1299933895d54b6e87b < a9a505f5b39d8fff1a55963a5e524c84639e98b2 81e6b51709da162b94e40a445bb60856406beaa1 < 04301da4d87067a989f70ee56942bf9d97cd2a45 322b70b522abe03cd59712bb47a72eddd835d19d < a2d9d884e84bfd37892219b1f55847f36d8e9901 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e < 5e22217c11424ef958ba28d03ff7167b4d7a8914 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e < 523f6268e86552a048975749251184c4e9a4b38f 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e < e3a0ddbaf7f1f9ffc070718b417461ced3268758 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e < 4aae44f65827f0213a7361cf9c32cfe06114473f 7fc2172ad4e701d3c6e7dcb7b2efd8df71d2417b 1c90a357cef4219cb436e59cc7463888103e104b

Linux / Linux

5.15

References

NVD ↗ CVE.org ↗ EPSS Data ↗