CVE-2026-80676

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

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

Published

2026-08-28 08:16:52.883000

Last modified

2026-10-21 13:19:57.933000

View original CVE JSON

{
  "id": "CVE-2026-80676",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-08-28T08:16:52.883",
  "lastModified": "2026-10-21T13:19:57.933",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nDrivers: hv: vmbus: use generic driver_override infrastructure\n\nWhen a driver is probed through __driver_attach(), the bus' match()\ncallback is called without the device lock held, thus accessing the\ndriver_override field without a lock, which can cause a UAF.\n\nFix this by using the driver-core driver_override infrastructure taking\ncare of proper locking internally.\n\nNote that calling match() from __driver_attach() without the device lock\nheld is intentional. [1]"
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/hv/vmbus_drv.c",
            "include/linux/hyperv.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "d765edbb301c0e196015a59b17420558088ea33f",
              "lessThan": "a1656234a4a2dc6e975546867887c5f63e4a90f0",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d765edbb301c0e196015a59b17420558088ea33f",
              "lessThan": "d1cb12ae81d2f7a58b0b1cfb51862afca98e6058",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d765edbb301c0e196015a59b17420558088ea33f",
              "lessThan": "0e2f0833556c8c5269deb457b89d538644a3b747",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d765edbb301c0e196015a59b17420558088ea33f",
              "lessThan": "2fb010ea7ca98cd09a6d365260b769f627e73a76",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d765edbb301c0e196015a59b17420558088ea33f",
              "lessThan": "331d8900121a1d74ecd45cd2db742ddcb5a0a565",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/hv/vmbus_drv.c",
            "include/linux/hyperv.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4.20",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "4.20",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.97",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.40",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.1.5",
              "lessThanOrEqual": "7.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0e2f0833556c8c5269deb457b89d538644a3b747",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2fb010ea7ca98cd09a6d365260b769f627e73a76",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/331d8900121a1d74ecd45cd2db742ddcb5a0a565",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a1656234a4a2dc6e975546867887c5f63e4a90f0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d1cb12ae81d2f7a58b0b1cfb51862afca98e6058",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}