Tracker / CVE-2024-40909
CVE-2024-40909
High 7.8
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a potential use-after-free in bpf_link_free() After commit 1a80dbcb2dba, bpf_link can be freed by link->ops->dealloc_deferred, but the code still tests and uses link->ops->dealloc afterward, which leads to a use-after-free as reported by syzbot. Actually, one of them should be sufficient, so just call one of them instead of both. Also add a WARN_ON() in case of any problematic implementation.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 6.6.26 → 6.6.35 |
| linux | linux_kernel · 6.9 → 6.9.6 |
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.