CVE-2026-64086
Description
A flaw was found in the Linux kernel's hwmon (hardware monitoring) subsystem, specifically in the pmbus/adm1266 driver. The adm1266_pmbus_block_xfer() function attempts to read one byte more than the allocated buffer size during a block transfer read operation. This out-of-bounds write can lead to memory corruption and potentially an information disclosure or denial of service.
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
Frequently Asked Questions
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