« Back to list

CVE-2025-37800

Status: ModifiedMedium (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

driver core: fix potential NULL pointer dereference in dev_uevent()

If userspace reads "uevent" device attribute at the same time as another threads unbinds the device from its driver, change to dev->driver from a valid pointer to NULL may result in crash. Fix this by using READ_ONCE() when fetching the pointer, and take bus' drivers klist lock to make sure driver instance will not disappear while we access it.

Use WRITE_ONCE() when setting the driver pointer to ensure there is no tearing.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Linux — Linux Kernel

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2025-37800",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 1.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "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": "16574dccd8f62dc1b585325f8a6a0aab10047ed8",
              "lessThan": "abe56be73eb10a677d16066f65ff9d30251f5eee",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "16574dccd8f62dc1b585325f8a6a0aab10047ed8",
              "lessThan": "2b344e779d9afd0fcb5ee4000e4d0fc7d8d867eb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "16574dccd8f62dc1b585325f8a6a0aab10047ed8",
              "lessThan": "3781e4b83e174364998855de777e184cf0b62c40",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "16574dccd8f62dc1b585325f8a6a0aab10047ed8",
              "lessThan": "18daa52418e7e4629ed1703b64777294209d2622",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/base/base.h",
            "drivers/base/bus.c",
            "drivers/base/core.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.22"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.22",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.89",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.26",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.14.5",
              "versionType": "semver",
              "lessThanOrEqual": "6.14.*"
            },
            {
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/base/base.h",
            "drivers/base/bus.c",
            "drivers/base/core.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-05-08T07:15:50.420",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/18daa52418e7e4629ed1703b64777294209d2622",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2b344e779d9afd0fcb5ee4000e4d0fc7d8d867eb",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3781e4b83e174364998855de777e184cf0b62c40",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/abe56be73eb10a677d16066f65ff9d30251f5eee",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: fix potential NULL pointer dereference in dev_uevent()\n\nIf userspace reads \"uevent\" device attribute at the same time as another\nthreads unbinds the device from its driver, change to dev->driver from a\nvalid pointer to NULL may result in crash. Fix this by using READ_ONCE()\nwhen fetching the pointer, and take bus' drivers klist lock to make sure\ndriver instance will not disappear while we access it.\n\nUse WRITE_ONCE() when setting the driver pointer to ensure there is no\ntearing."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: núcleo del controlador: se corrige una posible desreferencia de puntero nulo en dev_uevent(). Si el espacio de usuario lee el atributo de dispositivo \"uevent\" al mismo tiempo que otro subproceso desvincula el dispositivo de su controlador, cambiar de un puntero válido a nulo en dev->driver puede provocar un fallo. Se soluciona esto usando READ_ONCE() al obtener el puntero y bloqueando la lista de k de los controladores del bus para garantizar que la instancia del controlador no desaparezca al acceder a ella. Use WRITE_ONCE() al configurar el puntero del controlador para evitar cortes."
    }
  ],
  "lastModified": "2026-07-30T06:22:21.297",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4D51CA5E-345A-4098-B85D-3F2BED7BF3A0",
              "versionEndExcluding": "6.6.89"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "22F52099-F422-4D19-8283-45F9F9BF4392",
              "versionEndExcluding": "6.12.26",
              "versionStartIncluding": "6.7"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6B25CA7E-4CD0-46DB-B4EF-13A3516071FB",
              "versionEndExcluding": "6.14.5",
              "versionStartIncluding": "6.13"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8D465631-2980-487A-8E65-40AE2B9F8ED1"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4C9D071F-B28E-46EC-AC61-22B913390211"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "13FC0DDE-E513-465E-9E81-515702D49B74"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}