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CVE-2026-90208

Estado: RecibidaSin puntuar—

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.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-90208",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "f11899894c0a683c754ca71b45f7c9c3d35a3a1c",
              "lessThan": "7eb5764d25c4ac7f5d126621660f7219b61fd2fd",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f11899894c0a683c754ca71b45f7c9c3d35a3a1c",
              "lessThan": "3b212f9d70805d91febae01d618868f4860e267c",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/clocksource/samsung_pwm_timer.c",
            "drivers/pwm/pwm-samsung.c",
            "include/clocksource/samsung_pwm.h"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.10"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.10",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/clocksource/samsung_pwm_timer.c",
            "drivers/pwm/pwm-samsung.c",
            "include/clocksource/samsung_pwm.h"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:15.950",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/3b212f9d70805d91febae01d618868f4860e267c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7eb5764d25c4ac7f5d126621660f7219b61fd2fd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "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."
    }
  ],
  "lastModified": "2026-09-17T17:17:15.950",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}