Tracker / CVE-2021-47295
CVE-2021-47295
High 7.5
In the Linux kernel, the following vulnerability has been resolved: net: sched: fix memory leak in tcindex_partial_destroy_work Syzbot reported memory leak in tcindex_set_parms(). The problem was in non-freed perfect hash in tcindex_partial_destroy_work(). In tcindex_set_parms() new tcindex_data is allocated and some fields from old one are copied to new one, but not the perfect hash. Since tcindex_partial_destroy_work() is the destroy function for old tcindex_data, we need to free perfect hash to avoid memory leak.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.18 → 5.4.136 |
| linux | linux_kernel · 5.11 → 5.13.6 |
| linux | linux_kernel · 5.5 → 5.10.54 |
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.