VulnerabilityPublished 17 Sep 2026Updated 30 Oct 2026

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

Source GCVE Database

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Authoritative record:CVE-2026-90208· Medium

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

Data as of 30 Oct 2026, 18:33 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Patch: Available – fixed in a25ea67a913f98b8461aff1e9e3a5f6dc2378395, 5720fe5cabda19f395d194ca57321c7b85f8af80, 9c97311a5f5d388eece66fc415167b38f35fe6a1 +3

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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.

ghsa-64fq-hj58-5rjq

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, < 9c97311a5f5d388eece66fc415167b38f35fe6a1	Fixed in 9c97311a5f5d388eece66fc415167b38f35fe6a1
LinuxLinux	Affected ≥ f11899894c0a683c754ca71b45f7c9c3d35a3a1c, < 8f823b47eb889ea70f4c360164e96453f40e3646	Fixed in 8f823b47eb889ea70f4c360164e96453f40e3646
LinuxLinux	Affected ≥ f11899894c0a683c754ca71b45f7c9c3d35a3a1c, < 7eb5764d25c4ac7f5d126621660f7219b61fd2fd	Fixed in 7eb5764d25c4ac7f5d126621660f7219b61fd2fd
LinuxLinux	Affected ≥ f11899894c0a683c754ca71b45f7c9c3d35a3a1c, < 3b212f9d70805d91febae01d618868f4860e267c	Fixed in 3b212f9d70805d91febae01d618868f4860e267c

AI-suggested

A fix has been implemented by switching to raw_spinlock_t for the samsung_pwm_lock. Users should apply the updated Linux kernel version containing this fix once available. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's Samsung PWM timer driver was resolved by switching the locking mechanism to raw_spinlock_t. This change prevents the use of sleeping locks in atomic contexts such as hard interrupt handlers when PREEMPT_RT is enabled on ARM systems.

References

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