Tracker / CVE-2023-2235
CVE-2023-2235
High 7.8
A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to achieve local privilege escalation. The perf_group_detach function did not check the event's siblings' attach_state before calling add_event_to_groups(), but remove_on_exec made it possible to call list_del_event() on before detaching from their group, making it possible to use a dangling pointer causing a use-after-free vulnerability. We recommend upgrading past commit fd0815f632c24878e325821943edccc7fde947a2.
Affected products and versions
| linux | linux_kernel · 5.13 → 5.15.104 |
|---|---|
| linux | linux_kernel · 5.16 → 6.1.21 |
| linux | linux_kernel · 6.2 → 6.2.8 |
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.