{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5d44fe7c9808c56e136e59147bd932f5491520f1"
            },
            {
              "fixed": "82c5a30a66e2a7337d99476c67d6fc1a99c4250e"
            },
            {
              "fixed": "fade308845c89f784da8a6780c1e77258488f1b6"
            },
            {
              "fixed": "6dc76371a9a360c29de00df5b11563102d9d675a"
            },
            {
              "fixed": "99dc05c75acc3c8cde8d89c5371f4b569de5ac62"
            },
            {
              "fixed": "10a2b430f8f06ae14b9590b6f6faa6b588ef0654"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.7.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68411.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: clamp virtio RX length before skb_put\n\nhwsim_virtio_rx_work() passes the virtqueue used-ring length reported by\nthe device straight to skb_put() on a fixed-size receive skb. A backend\nreporting a length larger than the skb tailroom drives skb_put() past the\nbuffer end and hits skb_over_panic() -- a host-triggerable guest panic\n(denial of service).\n\nClamp the length to the skb's available room before skb_put(). A\nconforming device never reports more than the posted buffer size, so valid\nframes are unaffected; a truncated over-report then fails the\nlength/header checks in hwsim_virtio_handle_cmd() and is dropped, so\ntruncating rather than dropping here cannot be turned into a parsing\nproblem.",
  "id": "CVE-2026-68411",
  "modified": "2026-08-12T03:51:32.437603221Z",
  "published": "2026-08-10T12:04:31.532Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10a2b430f8f06ae14b9590b6f6faa6b588ef0654"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6dc76371a9a360c29de00df5b11563102d9d675a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82c5a30a66e2a7337d99476c67d6fc1a99c4250e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99dc05c75acc3c8cde8d89c5371f4b569de5ac62"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fade308845c89f784da8a6780c1e77258488f1b6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68411.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68411"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "wifi: mac80211_hwsim: clamp virtio RX length before skb_put"
}