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CVE-2026-98311

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: virt_wifi: don't transfer operstate before register virt_wifi_newlink() calls netif_stacked_transfer_operstate() before register_netdevice(). If the lower device is dormant, that queues the new netdev on lweventlist while it is still uninitialized. If registration fails after that, for example because of an invalid name such as "bad/name", free_netdev() immediately frees the object. A later linkwatch_fire_event() then use-after-frees the list entry. Move the transfer to after netdev_upper_dev_link(), as macvlan and ipvlan already do.

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-10-06 09:18:22.573000
Last modified
2026-10-19 10:18:33.153000
View original CVE JSON 
{
  "id": "CVE-2026-98311",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-10-06T09:18:22.573",
  "lastModified": "2026-10-19T10:18:33.153",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: virt_wifi: don't transfer operstate before register\n\nvirt_wifi_newlink() calls netif_stacked_transfer_operstate() before\nregister_netdevice(). If the lower device is dormant, that queues the\nnew netdev on lweventlist while it is still uninitialized. If\nregistration fails after that, for example because of an invalid name\nsuch as \"bad/name\", free_netdev() immediately frees the object. A\nlater linkwatch_fire_event() then use-after-frees the list entry.\n\nMove the transfer to after netdev_upper_dev_link(), as macvlan and\nipvlan already do."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/net/wireless/virtual/virt_wifi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "c7cdba31ed8b87526db978976392802d3f93110c",
              "lessThan": "ee9ea1afd6990def51d52b3a0aecd5cfcc951da0",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c7cdba31ed8b87526db978976392802d3f93110c",
              "lessThan": "9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c7cdba31ed8b87526db978976392802d3f93110c",
              "lessThan": "f9526054c2b2cace5916b7225603d008834ec011",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c7cdba31ed8b87526db978976392802d3f93110c",
              "lessThan": "e8304e25c6dabb8accf38b807969438d0ce84fd7",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c7cdba31ed8b87526db978976392802d3f93110c",
              "lessThan": "ca49763c42c1089d654bf11b037980a9ede3772c",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c7cdba31ed8b87526db978976392802d3f93110c",
              "lessThan": "293c56a66510bb7de073a1aba388e38abddff1fb",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c7cdba31ed8b87526db978976392802d3f93110c",
              "lessThan": "b808a9af5fd21f9c68b0d024eda7535b5dce6a4e",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "c7cdba31ed8b87526db978976392802d3f93110c",
              "lessThan": "e5c8d7acd31b27057ea42cd405d0b3ece097bc89",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/net/wireless/virtual/virt_wifi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "5.0",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "5.0",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.10.271",
              "lessThanOrEqual": "5.10.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.15.222",
              "lessThanOrEqual": "5.15.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.189",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.158",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.112",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.54",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.8",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/293c56a66510bb7de073a1aba388e38abddff1fb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9ce26201f6dedf3fa02b97da8c67ee6f6c5f7225",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b808a9af5fd21f9c68b0d024eda7535b5dce6a4e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ca49763c42c1089d654bf11b037980a9ede3772c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e5c8d7acd31b27057ea42cd405d0b3ece097bc89",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e8304e25c6dabb8accf38b807969438d0ce84fd7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ee9ea1afd6990def51d52b3a0aecd5cfcc951da0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f9526054c2b2cace5916b7225603d008834ec011",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}