Tracker / CVE-2021-47361
CVE-2021-47361
High 7.8
In the Linux kernel, the following vulnerability has been resolved: mcb: fix error handling in mcb_alloc_bus() There are two bugs: 1) If ida_simple_get() fails then this code calls put_device(carrier) but we haven't yet called get_device(carrier) and probably that leads to a use after free. 2) After device_initialize() then we need to use put_device() to release the bus. This will free the internal resources tied to the device and call mcb_free_bus() which will free the rest.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 4.10 → 4.14.249 |
| linux | linux_kernel · 4.15 → 4.19.209 |
| linux | linux_kernel · 4.20 → 5.4.150 |
| linux | linux_kernel · 4.7 → 4.9.285 |
| linux | linux_kernel · 5.11 → 5.14.9 |
| linux | linux_kernel · 5.5 → 5.10.70 |
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.