CVE-2023-53472

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Source
https://cve.org/CVERecord?id=CVE-2023-53472
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53472.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-53472
Downstream
Related
Published
2025-10-01T11:42:41.951Z
Modified
2026-03-20T12:33:10.868117Z
Summary
pwm: lpc32xx: Remove handling of PWM channels
Details

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 devmpwmchipadd() is called.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53472.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
bb4de81eb940e7027f37a6fd3b7ddcb4403deb56
Fixed
abd9b2ee4047ccd980decbf26d61f9637604b1d5
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4459118977665f681017e1299933895d54b6e87b
Fixed
a9a505f5b39d8fff1a55963a5e524c84639e98b2
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
81e6b51709da162b94e40a445bb60856406beaa1
Fixed
04301da4d87067a989f70ee56942bf9d97cd2a45
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
322b70b522abe03cd59712bb47a72eddd835d19d
Fixed
a2d9d884e84bfd37892219b1f55847f36d8e9901
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3d2813fb17e5fd0d73c1d1442ca0192bde4af10e
Fixed
5e22217c11424ef958ba28d03ff7167b4d7a8914
Fixed
523f6268e86552a048975749251184c4e9a4b38f
Fixed
e3a0ddbaf7f1f9ffc070718b417461ced3268758
Fixed
4aae44f65827f0213a7361cf9c32cfe06114473f
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
7fc2172ad4e701d3c6e7dcb7b2efd8df71d2417b
Last affected
1c90a357cef4219cb436e59cc7463888103e104b

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53472.json"