Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero Sashiko reports: In the aspeed-g6-pwm-tacho driver, the aspeed_tach_val_to_rpm() function calculates the fan RPM using the tachometer value. However, it does not check if the tachometer value is zero before performing the division. If the hardware reports a tachometer value of 0 (which can happen due to an extremely fast pulse, a stuck edge, or a hardware glitch), the calculated tach_div evaluates to 0. The subsequent call to do_div() with tach_div as the divisor triggers a divide-by-zero exception, leading to a kernel panic. Check the divisor against zero to fix the problem.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 before a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3; affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 before 898ca04b096b9e4640300eab91468c826a1ec92b; affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 before fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1; affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 before fe87b8dc67f1b2c64e76a66e78468c533d3c44ca |
| Linux / Linux | affected 6.9; unaffected 0 before 6.9; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.