high7.8
CVE-2023-2235
A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to achieve local privilege escalation.
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.13 before 5.15.104 from 5.16 before 6.1.21 from 6.2 before 6.2.8 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fd0815f632c24878e325821943edccc7fde947a2
- https://kernel.dance/fd0815f632c24878e325821943edccc7fde947a2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fd0815f632c24878e325821943edccc7fde947a2
- https://kernel.dance/fd0815f632c24878e325821943edccc7fde947a2
- https://security.netapp.com/advisory/ntap-20230609-0002/