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CentOS Linux: CVE-2023-2235: Important: kpatch-patch security update (Multiple Advisories)

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CentOS Linux: CVE-2023-2235: Important: kpatch-patch security update (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
06/22/2023

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)

  • centos-upgrade-kernel
  • centos-upgrade-kernel-rt
  • centos-upgrade-kpatch-patch-5_14_0-284_11_1
  • centos-upgrade-kpatch-patch-5_14_0-284_11_1-debuginfo
  • centos-upgrade-kpatch-patch-5_14_0-284_11_1-debugsource

References

  • CVE-2023-2235

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