VulnerabilityPublished 17 Sep 2026Updated 21 Oct 2026

CVE-2026-90208: Linux kernel · clocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in a25ea67a913f98b8461aff1e9e3a5f6dc2378395 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in a25ea67a913f98b8461aff1e9e3a5f6dc2378395, 5720fe5cabda19f395d194ca57321c7b85f8af80, 8f823b47eb889ea70f4c360164e96453f40e3646 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ f11899894c0a683c754ca71b45f7c9c3d35a3a1c, < a25ea67a913f98b8461aff1e9e3a5f6dc2378395	Fixed in a25ea67a913f98b8461aff1e9e3a5f6dc2378395
LinuxLinux	Affected ≥ f11899894c0a683c754ca71b45f7c9c3d35a3a1c, < 5720fe5cabda19f395d194ca57321c7b85f8af80	Fixed in 5720fe5cabda19f395d194ca57321c7b85f8af80
LinuxLinux	Affected ≥ f11899894c0a683c754ca71b45f7c9c3d35a3a1c, < 8f823b47eb889ea70f4c360164e96453f40e3646	Fixed in 8f823b47eb889ea70f4c360164e96453f40e3646
LinuxLinux	Affected ≥ f11899894c0a683c754ca71b45f7c9c3d35a3a1c, < 7eb5764d25c4ac7f5d126621660f7219b61fd2fd	Fixed in 7eb5764d25c4ac7f5d126621660f7219b61fd2fd
LinuxLinux	Affected ≥ f11899894c0a683c754ca71b45f7c9c3d35a3a1c, < 3b212f9d70805d91febae01d618868f4860e267c	Fixed in 3b212f9d70805d91febae01d618868f4860e267c
LinuxLinux	Affected =3.10	Fixed in–

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.

References

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