{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b859ad65309a5f1654e8b284de582831fc88e2d8"
            },
            {
              "fixed": "1e608cae1ba0b4a600b752efa223fd2be376b143"
            },
            {
              "fixed": "f1ee53e08fdd2906e90c6a6d71e1368fcd52bfc3"
            },
            {
              "fixed": "d86883f7e8f03a5b81b4e59f2c0b6c05f79e01fd"
            },
            {
              "fixed": "96ea44f2269f30364cffa054ee3a87e595bef0d4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.11.0"
            },
            {
              "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-2026-68311.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7925: guard link STA in decap offload\n\nmt7925_sta_set_decap_offload() iterates over the vif valid_links mask\nwhen updating decap offload state for an MLO station. The station may not\nhave a link STA for every valid link of the vif, so mt792x_sta_to_link()\ncan return NULL for a link that belongs to the vif but not to the station.\n\nThe function currently dereferences mlink before checking whether the\nlink WCID is ready. If mlink is NULL, setting or clearing\nMT_WCID_FLAG_HDR_TRANS dereferences a NULL pointer.\n\nSkip links without a station link before touching mlink-\u003ewcid.",
  "id": "CVE-2026-68311",
  "modified": "2026-08-12T03:51:10.212168542Z",
  "published": "2026-08-10T12:02:45.919Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e608cae1ba0b4a600b752efa223fd2be376b143"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96ea44f2269f30364cffa054ee3a87e595bef0d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d86883f7e8f03a5b81b4e59f2c0b6c05f79e01fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1ee53e08fdd2906e90c6a6d71e1368fcd52bfc3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68311.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68311"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "wifi: mt76: mt7925: guard link STA in decap offload"
}