Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: PM: EM: Fix potential division-by-zero error in em_compute_costs() When the device is of a non-CPU type, table[i].performance won't be initialized in the previous em_init_performance(), resulting in division by zero when calculating costs in em_compute_costs(). Since the 'cost' algorithm is only used for EAS energy efficiency calculations and is currently not utilized by other device drivers, we should add the _is_cpu_device(dev) check to prevent this division-by-zero issue.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1b600da510735a0f92c8b4140a7e2cb037a6a6c3 before 81d72f9241d884ec29524431f74f8009310cfa0c; affected 1b600da510735a0f92c8b4140a7e2cb037a6a6c3 before 14cbdd64f3870cf0a2d94b87919b9056448c59a0; affected 1b600da510735a0f92c8b4140a7e2cb037a6a6c3 before 179c0c7044a378198adb36f2a12410ab68cc730a |
| Linux / Linux | affected 6.9; unaffected 0 before 6.9; unaffected 6.12.34 through 6.12.*; unaffected 6.15.3 through 6.15.*; unaffected 6.16 through * |
CWE
No CWE identifiers supplied.