CVE-2026-98204 (GCVE-0-2026-98204)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:44 – Updated: 2026-10-06 08:44
VLAI
Title
Input: rmi_smbus - fix out-of-bounds read in rmi_smb_write_block()
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 82264d0cf7aef2247563c031ff2ab96579d5d0cc , < d01337c0892d1509500c727edf81380777c2dd0f (git)
Affected: 82264d0cf7aef2247563c031ff2ab96579d5d0cc , < 7c800af1c6030a5f27d46ce7d6d5d75f9c1efaf8 (git)
Affected: 82264d0cf7aef2247563c031ff2ab96579d5d0cc , < 29fbcf5834f0a7f74bfd017c07da2411b35a4e2a (git)
Affected: 82264d0cf7aef2247563c031ff2ab96579d5d0cc , < 50dd585bee7669eb165e5defcc35d17f3822cfbb (git)
Affected: 82264d0cf7aef2247563c031ff2ab96579d5d0cc , < e022538e13dd1c82af5ec25ac28f12ca0ab26160 (git)
Affected: 82264d0cf7aef2247563c031ff2ab96579d5d0cc , < dc05ec97b8299e48e31367a9bc412c7e9c0e2b42 (git)
Affected: 82264d0cf7aef2247563c031ff2ab96579d5d0cc , < 9f0ce5e162eed8b68345abe839c59768bc60f99a (git)
Affected: 82264d0cf7aef2247563c031ff2ab96579d5d0cc , < 51cfe54f815ae175c7d1126b983d4d7c89715004 (git)
Create a notification for this product.
Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 5.10.271 , ≤ 5.10.* (semver)
Unaffected: 5.15.222 , ≤ 5.15.* (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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        }
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          "url": "https://git.kernel.org/stable/c/29fbcf5834f0a7f74bfd017c07da2411b35a4e2a"
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    "datePublished": "2026-10-06T08:44:41.712Z",
    "dateReserved": "2026-09-25T10:25:14.325Z",
    "dateUpdated": "2026-10-06T08:44:41.712Z",
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          }
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        "id": "CVE-2026-98204",
        "lastModified": "2026-10-19T10:18:21.060",
        "metrics": {},
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      "cve": "CVE-2026-98204",
      "id": "CVE-2026-98204",
      "initial_release_date": "2026-10-06T00:00:00+00:00",
      "product_status:known_affected": "263",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Input: rmi_smbus - fix out-of-bounds read in rmi_smb_write_block()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98204.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-07T16:28:24Z",
      "cve": "CVE-2026-98204",
      "id": "CVE-2026-98204",
      "initial_release_date": "2026-10-07T16:28:24Z",
      "product_status:known_affected": "263",
      "product_status:known_not_affected": "84",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98204",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98204.json",
      "version": "2"
    }
  }
}



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