{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1264b951463a00efebe1bb596499aaad620ec8af"
            },
            {
              "fixed": "e165a1d295e7e814e13b0f92c86e5d48309509ce"
            },
            {
              "fixed": "bcde7249d45f52f994a9872bedf45994472ade77"
            },
            {
              "fixed": "fb1b50ab699211e777dca5ccfb648788b6a6e519"
            },
            {
              "fixed": "f742d9c98b5c504fc9e6744eef13a721c2aea486"
            },
            {
              "fixed": "61a799ffd1e5a4fd3702d547828b7ff3d161468e"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.30"
            },
            {
              "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-2026-68373.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: at76c50x-usb: avoid length underflow in at76_guess_freq()\n\nat76_guess_freq() checks only that the received frame is at least a bare\n802.11 header (24 bytes) before subtracting the fixed management-body\noffset:\n\n\tlen -= el_off;\n\nFor both beacon and probe response frames, el_off is 36. If the frame is\nshorter than el_off, subtracting it causes the calculated IE length to\nwrap. The length is eventually passed to cfg80211_find_elem_match() as a\nvery large unsigned value, so the element walk runs beyond the RX skb.\n\nThis path is reached from at76_rx_tasklet() while scanning. If the device\ndelivers a truncated beacon or probe response, the oversized IE length\ncauses an out-of-bounds read during scanning.\n\nSkip the IE lookup if the frame does not reach the variable elements,\nbefore subtracting el_off.",
  "id": "CVE-2026-68373",
  "modified": "2026-08-12T03:51:26.354393561Z",
  "published": "2026-08-10T12:03:51.663Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61a799ffd1e5a4fd3702d547828b7ff3d161468e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bcde7249d45f52f994a9872bedf45994472ade77"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e165a1d295e7e814e13b0f92c86e5d48309509ce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f742d9c98b5c504fc9e6744eef13a721c2aea486"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb1b50ab699211e777dca5ccfb648788b6a6e519"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68373.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68373"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "wifi: at76c50x-usb: avoid length underflow in at76_guess_freq()"
}