CVE Watch7 ago 2026

CVE-2023-2235

A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to achieve local privilege escalation. The

CVSS

7.8

Alto

EPSS

0.3%

p16

KEV

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Exploit Today

0-100

Publicado: 1 may 2023 · Última mod.: 7 ago 2026 · CWE-416

EPSS · 30d

0.3%EPSS · 30 días0.3%

2026-07-312026-08-28

Descripción técnica

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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