Vulnerability · 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 only a single output which is
Published Oct 1, 2025 · catalog updated May 23, 2026 · Linux Linux
Check this week
CVE-2023-53472 is not in CISA KEV. FIRST estimates a 16.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- None0.0
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 16.00%
- Remediation
- Version ranges on file
- Affected products
- vendor Linux Linux 5.4.149 <5.4.257
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_ad
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Linux Linux 5.4.149 <5.4.2575.4.149 <5.4.257
How to fix CVE-2023-53472
Recommended remediation
Affected version ranges suggest a fixed boundary. Verify against the vendor advisory for your release.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
CVE-2023-53472 is not in CISA KEV. FIRST estimates a 16.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.
Which versions are affected?
Compare what you have installed with Linux Linux 5.4.149 <5.4.257 5.4.149 <5.4.257. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 16.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Oct 1, 2025 · EUVD
Detected
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 wh
May 23, 2026 · EUVD
Updated
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 wh
Sources
- EUVDVulnerability recordEUVD-2025-32824
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 va
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog May 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.