{"id":"CVE-2026-98204","revision":"03a8032bfa9540a684a40cb7d9a707aa","records":[{"revision":"03a8032bfa9540a684a40cb7d9a707aa","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98204","aliases":[],"title":"Input: rmi_smbus - fix out-of-bounds read in rmi_smb_write_block()","description":"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.","state":0,"publishedAt":"2026-10-06T08:44:41.712+00:00","modifiedAt":"2026-10-19T09:15:35.168+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/input/rmi4/rmi_smbus.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"82264d0cf7aef2247563c031ff2ab96579d5d0cc\",\n                            \"lessThan\": \"d01337c0892d1509500c727edf81380777c2dd0f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"82264d0cf7aef2247563c031ff2ab96579d5d0cc\",\n                            \"lessThan\": \"7c800af1c6030a5f27d46ce7d6d5d75f9c1efaf8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"82264d0cf7aef2247563c031ff2ab96579d5d0cc\",\n                            \"lessThan\": \"29fbcf5834f0a7f74bfd017c07da2411b35a4e2a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"82264d0cf7aef2247563c031ff2ab96579d5d0cc\",\n                            \"lessThan\": \"50dd585bee7669eb165e5defcc35d17f3822cfbb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"82264d0cf7aef2247563c031ff2ab96579d5d0cc\",\n                            \"lessThan\": \"e022538e13dd1c82af5ec25ac28f12ca0ab26160\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"82264d0cf7aef2247563c031ff2ab96579d5d0cc\",\n                            \"lessThan\": \"dc05ec97b8299e48e31367a9bc412c7e9c0e2b42\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"82264d0cf7aef2247563c031ff2ab96579d5d0cc\",\n                            \"lessThan\": \"9f0ce5e162eed8b68345abe839c59768bc60f99a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"82264d0cf7aef2247563c031ff2ab96579d5d0cc\",\n                            \"lessThan\": \"51cfe54f815ae175c7d1126b983d4d7c89715004\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/input/rmi4/rmi_smbus.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d01337c0892d1509500c727edf81380777c2dd0f","https://git.kernel.org/stable/c/7c800af1c6030a5f27d46ce7d6d5d75f9c1efaf8","https://git.kernel.org/stable/c/29fbcf5834f0a7f74bfd017c07da2411b35a4e2a","https://git.kernel.org/stable/c/50dd585bee7669eb165e5defcc35d17f3822cfbb","https://git.kernel.org/stable/c/e022538e13dd1c82af5ec25ac28f12ca0ab26160","https://git.kernel.org/stable/c/dc05ec97b8299e48e31367a9bc412c7e9c0e2b42","https://git.kernel.org/stable/c/9f0ce5e162eed8b68345abe839c59768bc60f99a","https://git.kernel.org/stable/c/51cfe54f815ae175c7d1126b983d4d7c89715004"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98204","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98204","identifiers":["CVE-2026-98204"]},"retained":false,"historicalAffected":[]}],"coverage":[]}