Tracker / CVE-2021-46940
CVE-2021-46940
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: tools/power turbostat: Fix offset overflow issue in index converting The idx_to_offset() function returns type int (32-bit signed), but MSR_PKG_ENERGY_STAT is u32 and would be interpreted as a negative number. The end result is that it hits the if (offset < 0) check in update_msr_sum() which prevents the timer callback from updating the stat in the background when long durations are used. The similar issue exists in offset_to_idx() and update_msr_sum(). Fix this issue by converting the 'int' to 'off_t' accordingly.
Affected products and versions
| linux | linux_kernel · 5.10.0 → 5.10.36 |
|---|---|
| linux | linux_kernel · 5.11.0 → 5.11.20 |
| linux | linux_kernel · 5.12.0 → 5.12.3 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.