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.
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.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2023-33745 | 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. |
Ubuntu USN |
USN-6175-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6186-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6300-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6311-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6332-1 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-6347-1 | Linux kernel (Azure CVM) vulnerabilities |
Ubuntu USN |
USN-6385-1 | Linux kernel (OEM) vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 05 Mar 2025 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Fri, 22 Nov 2024 12:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: Google
Published:
Updated: 2025-03-05T19:03:27.818Z
Reserved: 2023-04-21T17:43:15.944Z
Link: CVE-2023-2235
Updated: 2024-08-02T06:19:13.580Z
Status : Modified
Published: 2023-05-01T13:15:44.713
Modified: 2024-11-21T07:58:12.630
Link: CVE-2023-2235
OpenCVE Enrichment
No data.
Weaknesses
EUVD
Ubuntu USN