Tracker / CVE-2022-49975
CVE-2022-49975
High 7.8
In the Linux kernel, the following vulnerability has been resolved: bpf: Don't redirect packets with invalid pkt_len Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs, that is, the flow->head is null. The root cause, as the [2] says, is because that bpf_prog_test_run_skb() run a bpf prog which redirects empty skbs. So we should determine whether the length of the packet modified by bpf prog or others like bpf_prog_test is valid before forwarding it directly.
Affected products and versions
| linux | linux_kernel · … → 5.4.212 |
|---|---|
| linux | linux_kernel · 5.11 → 5.15.65 |
| linux | linux_kernel · 5.16 → 5.19.7 |
| linux | linux_kernel · 5.5 → 5.10.141 |
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.