CVE-2023-53472 (GCVE-0-2023-53472)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:42 – Updated: 2026-05-11 19:45
VLAI?
Title
pwm: lpc32xx: Remove handling of PWM channels
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bb4de81eb940e7027f37a6fd3b7ddcb4403deb56 , < abd9b2ee4047ccd980decbf26d61f9637604b1d5 (git)
Affected: 4459118977665f681017e1299933895d54b6e87b , < a9a505f5b39d8fff1a55963a5e524c84639e98b2 (git)
Affected: 81e6b51709da162b94e40a445bb60856406beaa1 , < 04301da4d87067a989f70ee56942bf9d97cd2a45 (git)
Affected: 322b70b522abe03cd59712bb47a72eddd835d19d , < a2d9d884e84bfd37892219b1f55847f36d8e9901 (git)
Affected: 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e , < 5e22217c11424ef958ba28d03ff7167b4d7a8914 (git)
Affected: 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e , < 523f6268e86552a048975749251184c4e9a4b38f (git)
Affected: 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e , < e3a0ddbaf7f1f9ffc070718b417461ced3268758 (git)
Affected: 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e , < 4aae44f65827f0213a7361cf9c32cfe06114473f (git)
Affected: 7fc2172ad4e701d3c6e7dcb7b2efd8df71d2417b (git)
Affected: 1c90a357cef4219cb436e59cc7463888103e104b (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 4.14.326 , ≤ 4.14.* (semver)
Unaffected: 4.19.295 , ≤ 4.19.* (semver)
Unaffected: 5.4.257 , ≤ 5.4.* (semver)
Unaffected: 5.10.195 , ≤ 5.10.* (semver)
Unaffected: 5.15.132 , ≤ 5.15.* (semver)
Unaffected: 6.1.54 , ≤ 6.1.* (semver)
Unaffected: 6.5.4 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.