{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "82264d0cf7aef2247563c031ff2ab96579d5d0cc"
            },
            {
              "fixed": "d01337c0892d1509500c727edf81380777c2dd0f"
            },
            {
              "fixed": "7c800af1c6030a5f27d46ce7d6d5d75f9c1efaf8"
            },
            {
              "fixed": "29fbcf5834f0a7f74bfd017c07da2411b35a4e2a"
            },
            {
              "fixed": "50dd585bee7669eb165e5defcc35d17f3822cfbb"
            },
            {
              "fixed": "e022538e13dd1c82af5ec25ac28f12ca0ab26160"
            },
            {
              "fixed": "dc05ec97b8299e48e31367a9bc412c7e9c0e2b42"
            },
            {
              "fixed": "9f0ce5e162eed8b68345abe839c59768bc60f99a"
            },
            {
              "fixed": "51cfe54f815ae175c7d1126b983d4d7c89715004"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.10.0"
            },
            {
              "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": "6.18.54"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98204.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: rmi_smbus - fix out-of-bounds read in rmi_smb_write_block()\n\nWhen chunking writes into SMBus blocks in rmi_smb_write_block(), the\nloop calculates block_len using the original total length (len) instead\nof the remaining length (cur_len).\n\nIf len is greater than 32 bytes (SMB_MAX_COUNT), block_len remains 32\nfor every iteration, even on the final partial chunk where fewer than 32\nbytes remain. This causes smb_block_write() to read 32 bytes from the\nadvanced data buffer pointer, reading past the end of the input buffer.\n\nFix this by calculating block_len using cur_len and advancing the buffer\nand address pointers by block_len.",
  "id": "CVE-2026-98204",
  "modified": "2026-10-08T02:30:43.014154602Z",
  "published": "2026-10-06T08:44:41.712Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29fbcf5834f0a7f74bfd017c07da2411b35a4e2a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50dd585bee7669eb165e5defcc35d17f3822cfbb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51cfe54f815ae175c7d1126b983d4d7c89715004"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c800af1c6030a5f27d46ce7d6d5d75f9c1efaf8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f0ce5e162eed8b68345abe839c59768bc60f99a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d01337c0892d1509500c727edf81380777c2dd0f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc05ec97b8299e48e31367a9bc412c7e9c0e2b42"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e022538e13dd1c82af5ec25ac28f12ca0ab26160"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98204.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98204"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Input: rmi_smbus - fix out-of-bounds read in rmi_smb_write_block()"
}