CVE-2023-53472
published 2025-10-01CVE-2023-53472: In the Linux kernel, the following vulnerability has been resolved: pwm: lpc32xx: Remove handling of PWM channels Because LPC32xx PWM controllers have only a…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.15%
4.3th percentile
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
30 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.55-1 (bookworm) | linux 6.1.55-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 322b70b522abe03cd59712bb47a72eddd835d19d < a2d9d884e84bfd37892219b1f55847f36d8e9901 | a2d9d884e84bfd37892219b1f55847f36d8e9901 |
| linux | linux | >= 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e < 5e22217c11424ef958ba28d03ff7167b4d7a8914 | 5e22217c11424ef958ba28d03ff7167b4d7a8914 |
| linux | linux | >= 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e < 523f6268e86552a048975749251184c4e9a4b38f | 523f6268e86552a048975749251184c4e9a4b38f |
| linux | linux | >= 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e < e3a0ddbaf7f1f9ffc070718b417461ced3268758 | e3a0ddbaf7f1f9ffc070718b417461ced3268758 |
| linux | linux | >= 3d2813fb17e5fd0d73c1d1442ca0192bde4af10e < 4aae44f65827f0213a7361cf9c32cfe06114473f | 4aae44f65827f0213a7361cf9c32cfe06114473f |
| linux | linux | >= 4.14.248 < 4.14.326 | 4.14.326 |
| linux | linux | >= 4.19.208 < 4.19.295 | 4.19.295 |
| linux | linux | >= 4.9.284 < 4.10 | 4.10 |
| linux | linux | >= 4459118977665f681017e1299933895d54b6e87b < a9a505f5b39d8fff1a55963a5e524c84639e98b2 | a9a505f5b39d8fff1a55963a5e524c84639e98b2 |
| linux | linux | >= 5.10.69 < 5.10.195 | 5.10.195 |
| linux | linux | >= 5.14.8 < 5.15 | 5.15 |
| linux | linux | >= 5.4.149 < 5.4.257 | 5.4.257 |
| linux | linux | >= 81e6b51709da162b94e40a445bb60856406beaa1 < 04301da4d87067a989f70ee56942bf9d97cd2a45 | 04301da4d87067a989f70ee56942bf9d97cd2a45 |
| linux | linux | >= bb4de81eb940e7027f37a6fd3b7ddcb4403deb56 < abd9b2ee4047ccd980decbf26d61f9637604b1d5 | abd9b2ee4047ccd980decbf26d61f9637604b1d5 |
| linux | linux_kernel | >= 0 < 5.10.197-1 | 5.10.197-1 |
| linux | linux_kernel | >= 0 < 6.1.55-1 | 6.1.55-1 |
| linux | linux_kernel | >= 0 < 6.5.6-1 | 6.5.6-1 |
| linux | linux_kernel | >= 0 < 6.5.6-1 | 6.5.6-1 |
| linux | linux_kernel | >= 4.14.248 < 4.14.326 | 4.14.326 |
| linux | linux_kernel | >= 4.19.208 < 4.19.295 | 4.19.295 |
| linux | linux_kernel | >= 4.9.284 < 4.10 | 4.10 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
kernel: pwm: lpc32xx: Remove handling of PWM channels
vendor_redhat·2025-10-01·CVSS 5.5
CVE-2023-53472 [MEDIUM] kernel: pwm: lpc32xx: Remove handling of PWM channels
kernel: pwm: lpc32xx: Remove handling of PWM channels
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.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Packag
Debian
CVE-2023-53472: linux - In the Linux kernel, the following vulnerability has been resolved: pwm: lpc32x...
vendor_debian·2023·CVSS 5.5
CVE-2023-53472 [MEDIUM] CVE-2023-53472: linux - In the Linux kernel, the following vulnerability has been resolved: pwm: lpc32x...
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.
Scope: local
bookworm: resolved (fixed in 6.1.55-1)
bullseye: resolved (fixed in 5.10.197-1)
forky: resolved (fixed in 6.5.6-1)
sid: resolved (fixed in 6.5.6-1)
trixie: resolved (fixed
GHSA
GHSA-3g53-3cmj-qjrh: In the Linux kernel, the following vulnerability has been resolved:
pwm: lpc32xx: Remove handling of PWM channels
Because LPC32xx PWM controllers ha
ghsa_unreviewed·2025-10-01
CVE-2023-53472 [MEDIUM] CWE-476 GHSA-3g53-3cmj-qjrh: In the Linux kernel, the following vulnerability has been resolved:
pwm: lpc32xx: Remove handling of PWM channels
Because LPC32xx PWM controllers ha
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.
OSV
CVE-2023-53472: In the Linux kernel, the following vulnerability has been resolved: pwm: lpc32xx: Remove handling of PWM channels Because LPC32xx PWM controllers have
osv·2025-10-01·CVSS 5.5
CVE-2023-53472 [MEDIUM] CVE-2023-53472: In the Linux kernel, the following vulnerability has been resolved: pwm: lpc32xx: Remove handling of PWM channels Because LPC32xx PWM controllers have
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.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/04301da4d87067a989f70ee56942bf9d97cd2a45https://git.kernel.org/stable/c/4aae44f65827f0213a7361cf9c32cfe06114473fhttps://git.kernel.org/stable/c/523f6268e86552a048975749251184c4e9a4b38fhttps://git.kernel.org/stable/c/5e22217c11424ef958ba28d03ff7167b4d7a8914https://git.kernel.org/stable/c/a2d9d884e84bfd37892219b1f55847f36d8e9901https://git.kernel.org/stable/c/a9a505f5b39d8fff1a55963a5e524c84639e98b2https://git.kernel.org/stable/c/abd9b2ee4047ccd980decbf26d61f9637604b1d5https://git.kernel.org/stable/c/e3a0ddbaf7f1f9ffc070718b417461ced3268758
2025-10-01
Published