Rapid7 Vulnerability & Exploit Database

Red Hat: CVE-2023-2235: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events (Multiple Advisories)

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

Red Hat: CVE-2023-2235: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/01/2023
Created
06/23/2023
Added
06/22/2023
Modified
03/13/2024

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.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2023-2235
  • RHSA-2023:3705
  • RHSA-2023:3708
  • RHSA-2023:3723
  • RHSA-2023:4137
  • RHSA-2023:4138
  • RHSA-2023:4517
  • RHSA-2023:4541
  • RHSA-2023:5627
View more

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;