CVE-2026-98351 (GCVE-0-2026-98351)
Vulnerability from cvelistv5
Published
2026-10-06 08:46
Modified
2026-10-19 09:18
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: virt_wifi: free skb when disconnected When the simulated link is disconnected, virt_wifi_start_xmit() returns NET_XMIT_DROP without freeing the skb. dev_hard_start_xmit() treats this return value as consumed, so every packet sent while disconnected leaks its skb. Free the skb before returning the drop status.
References
Impacted products
Vendor Product Version
Linux Linux Version: c7cdba31ed8b87526db978976392802d3f93110c
Version: c7cdba31ed8b87526db978976392802d3f93110c
Version: c7cdba31ed8b87526db978976392802d3f93110c
Version: c7cdba31ed8b87526db978976392802d3f93110c
Version: c7cdba31ed8b87526db978976392802d3f93110c
Version: c7cdba31ed8b87526db978976392802d3f93110c
Version: c7cdba31ed8b87526db978976392802d3f93110c
Version: c7cdba31ed8b87526db978976392802d3f93110c
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/virtual/virt_wifi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "versionType": "git"
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.271",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.222",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
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                {
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                {
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                {
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: virt_wifi: free skb when disconnected\n\nWhen the simulated link is disconnected, virt_wifi_start_xmit() returns\nNET_XMIT_DROP without freeing the skb. dev_hard_start_xmit() treats this\nreturn value as consumed, so every packet sent while disconnected leaks its\nskb.\n\nFree the skb before returning the drop status."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:18:02.098Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/38d3a5df85345f158f78b478b265ca906224454e"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee053ea35c759135460f03d1c574f4ed08de844a"
        },
        {
          "url": "https://git.kernel.org/stable/c/d177eca79e1106834bc423d3969a4a2e3987996a"
        },
        {
          "url": "https://git.kernel.org/stable/c/36727a702cf8e3399e3da60d0856378f6afcfb34"
        },
        {
          "url": "https://git.kernel.org/stable/c/56469996c10a0240653fc00576b4d33bdfb4cc51"
        },
        {
          "url": "https://git.kernel.org/stable/c/4f266738af45675faa0e8afee08c6e780afa8b06"
        },
        {
          "url": "https://git.kernel.org/stable/c/46371442847a725cc0df3697fea2eba1dd54b82b"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9edf7cf63b96d2b776fca8d258d3c5256e40c8e"
        }
      ],
      "title": "wifi: virt_wifi: free skb when disconnected",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98351",
    "datePublished": "2026-10-06T08:46:39.335Z",
    "dateReserved": "2026-09-25T10:25:14.343Z",
    "dateUpdated": "2026-10-19T09:18:02.098Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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