Tracker / CVE-2016-4557
CVE-2016-4557
High 7.8
The replace_map_fd_with_map_ptr function in kernel/bpf/verifier.c in the Linux kernel before 4.5.5 does not properly maintain an fd data structure, which allows local users to gain privileges or cause a denial of service (use-after-free) via crafted BPF instructions that reference an incorrect file descriptor.
Affected products and versions
| linux | linux_kernel · 4.4 → 4.4.11 |
|---|---|
| linux | linux_kernel · 4.5 → 4.5.5 |
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.