Tracker / CVE-2021-47289
CVE-2021-47289
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: ACPI: fix NULL pointer dereference Commit 71f642833284 ("ACPI: utils: Fix reference counting in for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer that was possibly NULL. That fails miserably, because that helper inline function is not set up to handle that case. Just make acpi_dev_put() silently accept a NULL pointer, rather than calling down to put_device() with an invalid offset off that NULL pointer.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · … → 5.4.139 |
| linux | linux_kernel · 5.11 → 5.13.6 |
| linux | linux_kernel · 5.5 → 5.10.57 |
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.