CVE-2023-2235 | BDVDB-2026-201286 Detail

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.

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Exploit#

History#

1. Version 12023-05-01Record published in the CVE List.
2. Version 22026-08-07Most recent update recorded in the CVE List.