CVE-2026-98204
Description
In the Linux kernel, the following vulnerability has been resolved: Input: rmi_smbus - fix out-of-bounds read in rmi_smb_write_block() When chunking writes into SMBus blocks in rmi_smb_write_block(), the loop calculates block_len using the original total length (len) instead of the remaining length (cur_len). If len is greater than 32 bytes (SMB_MAX_COUNT), block_len remains 32 for every iteration, even on the final partial chunk where fewer than 32 bytes remain. This causes smb_block_write() to read 32 bytes from the advanced data buffer pointer, reading past the end of the input buffer. Fix this by calculating block_len using cur_len and advancing the buffer and address pointers by block_len.
How to fix
- Linux Linuxd01337c0892d1509500c727edf81380777c2dd0f, 7c800af1c6030a5f27d46ce7d6d5d75f9c1efaf8, 29fbcf5834f0a7f74bfd017c07da2411b35a4e2a, 50dd585bee7669eb165e5defcc35d17f3822cfbb, e022538e13dd1c82af5ec25ac28f12ca0ab26160, dc05ec97b8299e48e31367a9bc412c7e9c0e2b42, 9f0ce5e162eed8b68345abe839c59768bc60f99a, 51cfe54f815ae175c7d1126b983d4d7c89715004 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 82264d0cf7aef2247563c031ff2ab96579d5d0cc ≤ v < d01337c0892d1509500c727edf81380777c2dd0f, 82264d0cf7aef2247563c031ff2ab96579d5d0cc ≤ v < 7c800af1c6030a5f27d46ce7d6d5d75f9c1efaf8, 82264d0cf7aef2247563c031ff2ab96579d5d0cc ≤ v < 29fbcf5834f0a7f74bfd017c07da2411b35a4e2a, 82264d0cf7aef2247563c031ff2ab96579d5d0cc ≤ v < 50dd585bee7669eb165e5defcc35d17f3822cfbb, 82264d0cf7aef2247563c031ff2ab96579d5d0cc ≤ v < e022538e13dd1c82af5ec25ac28f12ca0ab26160, 82264d0cf7aef2247563c031ff2ab96579d5d0cc ≤ v < dc05ec97b8299e48e31367a9bc412c7e9c0e2b42, 82264d0cf7aef2247563c031ff2ab96579d5d0cc ≤ v < 9f0ce5e162eed8b68345abe839c59768bc60f99a, 82264d0cf7aef2247563c031ff2ab96579d5d0cc ≤ v < 51cfe54f815ae175c7d1126b983d4d7c89715004, 4.10 | d01337c0892d1509500c727edf81380777c2dd0f, 7c800af1c6030a5f27d46ce7d6d5d75f9c1efaf8, 29fbcf5834f0a7f74bfd017c07da2411b35a4e2a, 50dd585bee7669eb165e5defcc35d17f3822cfbb, e022538e13dd1c82af5ec25ac28f12ca0ab26160, dc05ec97b8299e48e31367a9bc412c7e9c0e2b42, 9f0ce5e162eed8b68345abe839c59768bc60f99a, 51cfe54f815ae175c7d1126b983d4d7c89715004 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.