7.8
High
CVE-2023-2235 A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to achieve local privilege…
Description
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
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Kernel 5.13 | 5.13 → < 6.3 | 6.3 |
References
- git.kernel.org git.kernel.org
- kernel.dance kernel.dance
Timeline
- Published
- Last modified
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