GHSA-hwwj-xrc2-6hxgHighCVSS 7.8
A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (5)
- https://nvd.nist.gov/vuln/detail/CVE-2023-2235
- 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
- https://github.com/advisories/GHSA-hwwj-xrc2-6hxg