CVE-2026-64135

A flaw was found in the Linux kernel's pmbus/adm1266 driver. This vulnerability occurs because the adm1266_nvmem_read_blackbox() function uses a small, fixed-size buffer to read data from an I2C (Inter-Integrated Circuit) device. If the device sends more data than the buffer can hold, it causes a buffer overflow. A local attacker could exploit this flaw to trigger a denial of service (DoS) or potentially escalate their privileges on the system.