CVE-2026-90208

Full vulnerability record from the local CVENow database.

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.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-17 17:17:15.950000

Last modified

2026-10-30 13:20:46.523000

View original CVE JSON

{
  "id": "CVE-2026-90208",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-17T17:17:15.950",
  "lastModified": "2026-10-30T13:20:46.523",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type\n\nSamsung PWM timer might be used as a clock source on some legacy systems.\nWhen PREEMPT_RT is enabled on ARM, regular spinlock is converted to a\nsleeping lock (mutex-based), which must not be used in atomic context\nsuch as hard interrupt handlers. Switch the samsung_pwm_lock to the\nraw_spinlock, which remains a true non-sleeping spinlock even\nunder PREEMPT_RT."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/clocksource/samsung_pwm_timer.c",
            "drivers/pwm/pwm-samsung.c",
            "include/clocksource/samsung_pwm.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "f11899894c0a683c754ca71b45f7c9c3d35a3a1c",
              "lessThan": "9c97311a5f5d388eece66fc415167b38f35fe6a1",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f11899894c0a683c754ca71b45f7c9c3d35a3a1c",
              "lessThan": "8f823b47eb889ea70f4c360164e96453f40e3646",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f11899894c0a683c754ca71b45f7c9c3d35a3a1c",
              "lessThan": "5720fe5cabda19f395d194ca57321c7b85f8af80",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f11899894c0a683c754ca71b45f7c9c3d35a3a1c",
              "lessThan": "a25ea67a913f98b8461aff1e9e3a5f6dc2378395",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f11899894c0a683c754ca71b45f7c9c3d35a3a1c",
              "lessThan": "7eb5764d25c4ac7f5d126621660f7219b61fd2fd",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f11899894c0a683c754ca71b45f7c9c3d35a3a1c",
              "lessThan": "3b212f9d70805d91febae01d618868f4860e267c",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/clocksource/samsung_pwm_timer.c",
            "drivers/pwm/pwm-samsung.c",
            "include/clocksource/samsung_pwm.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "3.10",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "3.10",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.191",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.114",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.57",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.6",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/3b212f9d70805d91febae01d618868f4860e267c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5720fe5cabda19f395d194ca57321c7b85f8af80",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7eb5764d25c4ac7f5d126621660f7219b61fd2fd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8f823b47eb889ea70f4c360164e96453f40e3646",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9c97311a5f5d388eece66fc415167b38f35fe6a1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a25ea67a913f98b8461aff1e9e3a5f6dc2378395",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}