{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a"
            },
            {
              "fixed": "3afdbebfee2ef7e9510880868cfb482cbffe6836"
            },
            {
              "fixed": "9b4086eb67a9a3b1ce69fef1b6793827363703ce"
            },
            {
              "fixed": "51b6d73373589abb9de4d84767b0db1bc8d395d9"
            },
            {
              "fixed": "066205553a0106565bcede934f5721c25ebd6e4e"
            },
            {
              "fixed": "18f60ee882403d5b48097f5f6ae45f794e4cc643"
            },
            {
              "fixed": "810f204ef8f61f0c930cf6b3280050b3ee6a8ae7"
            },
            {
              "fixed": "744e61bd06188d8bb068c26a461c252f242b05c9"
            },
            {
              "fixed": "273f9d667cde649f8de9d72b1303cc2f4b658c50"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.3.0"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98482.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: drop truncated I/RR/RNR PDUs in nfc_llcp_recv_hdlc()\n\nnfc_llcp_recv_hdlc() reads the sequence byte skb-\u003edata[2], via\nnfc_llcp_ns()/nfc_llcp_nr(), before any length check. The receive path\nonly guarantees the two-byte LLCP header -- __nfc_llcp_recv() checks it\nwith pskb_may_pull() and nfc_llcp_recv_agf() admits two-byte inner PDUs\n-- so a two-byte I, RR or RNR PDU reads one byte of uninitialised skb\ntailroom. The byte becomes N(R)/N(S); a peer can already set those with\na well-formed PDU, so this is acting on uninitialised memory, not new\npeer control.\n\nGuard the read with pskb_may_pull(), as commit 95674f506c63 (\"nfc: llcp:\nreject PDUs shorter than the LLCP header\") did for the two-byte header,\nso the sequence byte is present and linear before it is read. RR and RNR\nPDUs are LLCP_HEADER_SIZE + LLCP_SEQUENCE_SIZE bytes and an I PDU is\nlonger, so no valid frame is rejected; a truncated PDU is malformed, so\nreturn without a DM reply.",
  "id": "CVE-2026-98482",
  "modified": "2026-10-20T02:30:32.424170794Z",
  "published": "2026-10-18T15:15:56.227Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/066205553a0106565bcede934f5721c25ebd6e4e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18f60ee882403d5b48097f5f6ae45f794e4cc643"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/273f9d667cde649f8de9d72b1303cc2f4b658c50"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3afdbebfee2ef7e9510880868cfb482cbffe6836"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51b6d73373589abb9de4d84767b0db1bc8d395d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/744e61bd06188d8bb068c26a461c252f242b05c9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/810f204ef8f61f0c930cf6b3280050b3ee6a8ae7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b4086eb67a9a3b1ce69fef1b6793827363703ce"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98482.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98482"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nfc: llcp: drop truncated I/RR/RNR PDUs in nfc_llcp_recv_hdlc()"
}