EUVD-2026-81729

In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd/hsmp: Reject negative power cap writes in hwmon hsmphwmonwrite takes the user-supplied hwmon value as a signed long and assigns "val / MICROWATTPERMILLIWATT" to msg.args0, which is a u32. MICROWATTPERMILLIWATT is...

CVE-2026-90136

CVE-2026-90136 affects the Linux kernel 's AMD HSMP hwmon driver. In hsmp_hwmon_write(), a user-supplied signed value written to power1_cap is divided by an unsigned constant before being stored in a __u32 field. This causes a negative write (e.g., echo -1 > power1_cap) to be converted into a ...