clocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type (CVE-2026-90208) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90208

clocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type

Answer in brief

CVE-2026-90208 records a Unknown severity vulnerability in clocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=f11899894c0a683c754ca71b45f7c9c3d35a3a1c <7eb5764d25c4ac7f5d126621660f7219b61fd2fd \|\| >=f11899894c0a683c754ca71b45f7c9c3d35a3a1c <3b212f9d70805d91febae01d618868f4860e267c	7eb5764d25c4ac7f5d126621660f7219b61fd2fd, 3b212f9d70805d91febae01d618868f4860e267c
Linux/Linuxgeneric	3.10	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 7eb5764d25c4ac7f5d126621660f7219b61fd2fd if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 17, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: clocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type Samsung PWM timer might be used as a clock source on some legacy systems. When PREEMPT_RT is enabled on ARM, regular spinlock is converted to a sleeping lock (mutex-based), which must not be used in atomic context such as hard interrupt handlers. Switch the samsung_pwm_lock to the raw_spinlock, which remains a true non-sleeping spinlock even under PREEMPT_RT.

Quoted source text, attributed separately from HOL analysis.