Tracker / CVE-2021-46968
CVE-2021-46968
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: fix zcard and zqueue hot-unplug memleak Tests with kvm and a kmemdebug kernel showed, that on hot unplug the zcard and zqueue structs for the unplugged card or queue are not properly freed because of a mismatch with get/put for the embedded kref counter. This fix now adjusts the handling of the kref counters. With init the kref counter starts with 1. This initial value needs to drop to zero with the unregister of the card or queue to trigger the release and free the object.
Affected products and versions
| linux | linux_kernel · 5.10 → 5.10.36 |
|---|---|
| linux | linux_kernel · 5.11 → 5.11.20 |
| linux | linux_kernel · 5.12 → 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.