Tracker / CVE-2022-48933
CVE-2022-48933
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix memory leak during stateful obj update stateful objects can be updated from the control plane. The transaction logic allocates a temporary object for this purpose. The ->init function was called for this object, so plain kfree() leaks resources. We must call ->destroy function of the object. nft_obj_destroy does this, but it also decrements the module refcount, but the update path doesn't increment it. To avoid special-casing the update object release, do module_get for the update case too and release it via nft_obj_destroy().
Affected products and versions
| linux | linux_kernel · 5.11 → 5.15.26 |
|---|---|
| linux | linux_kernel · 5.16 → 5.16.12 |
| linux | linux_kernel · 5.4 → 5.4.182 |
| linux | linux_kernel · 5.5 → 5.10.103 |
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.