FKIE_CVE-2025-68374

Vulnerability from fkie_nvd - Published: 2025-12-24 11:16 - Updated: 2026-10-21 13:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: md: fix rcu protection in md_wakeup_thread We attempted to use RCU to protect the pointer 'thread', but directly passed the value when calling md_wakeup_thread(). This means that the RCU pointer has been acquired before rcu_read_lock(), which renders rcu_read_lock() ineffective and could lead to a use-after-free.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0dc76205549b4c25705e54345f211b9f66e018a0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/21989cb5034c835b212385a2afadf279d8069da0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a4bd1caf591faeae44cb10b6517e7dacb5139bda
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dc6d1249ee35c1c76700b4b96281daeb7637bce1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f98b191f78124405294481dea85f8a22a3eb0a59
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/md.c",
            "drivers/md/md.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "dc6d1249ee35c1c76700b4b96281daeb7637bce1",
              "status": "affected",
              "version": "4469315439827290923fce4f3f672599cabeb366",
              "versionType": "git"
            },
            {
              "lessThan": "21989cb5034c835b212385a2afadf279d8069da0",
              "status": "affected",
              "version": "4469315439827290923fce4f3f672599cabeb366",
              "versionType": "git"
            },
            {
              "lessThan": "a4bd1caf591faeae44cb10b6517e7dacb5139bda",
              "status": "affected",
              "version": "4469315439827290923fce4f3f672599cabeb366",
              "versionType": "git"
            },
            {
              "lessThan": "f98b191f78124405294481dea85f8a22a3eb0a59",
              "status": "affected",
              "version": "4469315439827290923fce4f3f672599cabeb366",
              "versionType": "git"
            },
            {
              "lessThan": "0dc76205549b4c25705e54345f211b9f66e018a0",
              "status": "affected",
              "version": "4469315439827290923fce4f3f672599cabeb366",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/md.c",
            "drivers/md/md.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: fix rcu protection in md_wakeup_thread\n\nWe attempted to use RCU to protect the pointer \u0027thread\u0027, but directly\npassed the value when calling md_wakeup_thread(). This means that the\nRCU pointer has been acquired before rcu_read_lock(), which renders\nrcu_read_lock() ineffective and could lead to a use-after-free."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmd: corregir la protecci\u00f3n RCU en md_wakeup_thread\n\nIntentamos usar RCU para proteger el puntero \u0027thread\u0027, pero pasamos directamente el valor al llamar a md_wakeup_thread(). Esto significa que el puntero RCU ha sido adquirido antes de rcu_read_lock(), lo que hace que rcu_read_lock() sea ineficaz y podr\u00eda conducir a un uso despu\u00e9s de liberaci\u00f3n."
    }
  ],
  "id": "CVE-2025-68374",
  "lastModified": "2026-10-21T13:18:23.390",
  "metrics": {},
  "published": "2025-12-24T11:16:00.993",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0dc76205549b4c25705e54345f211b9f66e018a0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/21989cb5034c835b212385a2afadf279d8069da0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a4bd1caf591faeae44cb10b6517e7dacb5139bda"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dc6d1249ee35c1c76700b4b96281daeb7637bce1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f98b191f78124405294481dea85f8a22a3eb0a59"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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