{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "bcd684aace34fedbd473fbd9b21ed06b0c2d2212"
            },
            {
              "fixed": "baed3fdf6ed2195c56f25ae18a086b938dcd3983"
            },
            {
              "fixed": "2f434478771a4ebdd535033561c0590bcde39753"
            },
            {
              "fixed": "5487f04c1ccbfa15aa6e531eb1ec9c9ec9c7bf31"
            },
            {
              "fixed": "bbe68e8249e2c76d65adfd9224fa95f1ca0fbe4e"
            },
            {
              "fixed": "4f0483bbcdaccc9d4aee30df7351863334cecfa7"
            },
            {
              "fixed": "7d44b897bff84edcd4814899314d661ad4956a8e"
            },
            {
              "fixed": "d56575a2595ee1f597f39e8a1cfb67ed3501678d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90221.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: fix use of uninitialized memory in CORE_INIT_RSP parsing\n\nnci_core_init_rsp_packet_v1() and nci_core_init_rsp_packet_v2() parse\nthe CORE_INIT_RSP packet without validating that the skb contains\nenough data. A malformed response (e.g. injected via virtual_ncidev)\ncan declare a large num_supported_rf_interfaces while providing\ninsufficient data, causing reads of uninitialized slab memory. This\nis later used in nci_init_complete_req(), triggering a KMSAN\nuninit-value warning.\n\nAdd skb length checks before accessing packet fields:\n- Validate the skb has at least 1 byte for the status field.\n- Validate the skb can hold the fixed-size header before parsing.\n- In v2, bounds-check each variable-length rf_interface entry and its\n  extension parameters within the parsing loop.\n- In v1, verify the skb is large enough for both the variable-length\n  rf_interfaces array and the trailing rsp_2 structure.",
  "id": "CVE-2026-90221",
  "modified": "2026-09-19T03:30:59.689826630Z",
  "published": "2026-09-17T16:07:32.070Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f434478771a4ebdd535033561c0590bcde39753"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f0483bbcdaccc9d4aee30df7351863334cecfa7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5487f04c1ccbfa15aa6e531eb1ec9c9ec9c7bf31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d44b897bff84edcd4814899314d661ad4956a8e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/baed3fdf6ed2195c56f25ae18a086b938dcd3983"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bbe68e8249e2c76d65adfd9224fa95f1ca0fbe4e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d56575a2595ee1f597f39e8a1cfb67ed3501678d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90221.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90221"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nfc: nci: fix use of uninitialized memory in CORE_INIT_RSP parsing"
}