摘要:
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.
安全等级: Low
公告ID: KylinSec-SA-2023-1327
发布日期: 2023年5月9日
关联CVE: CVE-2023-2235
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.
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2023-2235 | KY3.4-4A | kernel | Unaffected |
| CVE-2023-2235 | KY3.4-5A | kernel | Unaffected |
| CVE-2023-2235 | KY3.5.1 | kernel | Unaffected |
