Skip to content
CVE PROGRAM SOURCE RECORDUnscored

CVE-2023-53472

pwm: lpc32xx: Remove handling of PWM channels

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • bb4de81eb940e7027f37a6fd3b7ddcb4403deb56 to < abd9b2ee4047ccd980decbf26d61f9637604b1d5affected
  • 4459118977665f681017e1299933895d54b6e87b to < a9a505f5b39d8fff1a55963a5e524c84639e98b2affected
  • 81e6b51709da162b94e40a445bb60856406beaa1 to < 04301da4d87067a989f70ee56942bf9d97cd2a45affected
  • 322b70b522abe03cd59712bb47a72eddd835d19d to < a2d9d884e84bfd37892219b1f55847f36d8e9901affected
  • 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e to < 5e22217c11424ef958ba28d03ff7167b4d7a8914affected
  • 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e to < 523f6268e86552a048975749251184c4e9a4b38faffected
  • 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e to < e3a0ddbaf7f1f9ffc070718b417461ced3268758affected
  • 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e to < 4aae44f65827f0213a7361cf9c32cfe06114473faffected
  • 7fc2172ad4e701d3c6e7dcb7b2efd8df71d2417baffected
  • 1c90a357cef4219cb436e59cc7463888103e104baffected
  • 4.14.248 to < 4.14.326affected
  • 4.19.208 to < 4.19.295affected
  • 5.4.149 to < 5.4.257affected
  • 5.10.69 to < 5.10.195affected
  • 4.9.284 to < 4.10affected
  • 5.14.8 to < 5.15affected

Linux Linux

Default version status: affected

  • 5.15affected
  • 0 to < 5.15unaffected
  • 4.14.326 to ≤ 4.14.*unaffected
  • 4.19.295 to ≤ 4.19.*unaffected
  • 5.4.257 to ≤ 5.4.*unaffected
  • 5.10.195 to ≤ 5.10.*unaffected
  • 5.15.132 to ≤ 5.15.*unaffected
  • 6.1.54 to ≤ 6.1.*unaffected
  • 6.5.4 to ≤ 6.5.*unaffected
  • 6.6 to ≤ *unaffected

References