{"schema_version":"1.9.0","id":"UBUNTU-CVE-2023-2235","published":"2023-05-01T13:15:00Z","modified":"2026-09-03T22:51:31.337452562Z","related":["USN-6175-1","USN-6186-1","USN-6300-1","USN-6311-1","USN-6332-1","USN-6347-1","USN-6385-1"],"upstream":["CVE-2023-2235"],"details":"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.","affected":[{"package":{"name":"linux-hwe-edge","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/linux-hwe-edge?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.0-28.30~16.04.1","4.8.0-30.32~16.04.1","4.8.0-32.34~16.04.1","4.8.0-34.36~16.04.1","4.10.0-14.16~16.04.1","4.10.0-19.21~16.04.1","4.10.0-20.22~16.04.1","4.10.0-21.23~16.04.1","4.10.0-22.24~16.04.1","4.10.0-24.28~16.04.1","4.10.0-26.30~16.04.1","4.11.0-13.19~16.04.1","4.11.0-14.20~16.04.1","4.13.0-16.19~16.04.3","4.13.0-17.20~16.04.1","4.13.0-19.22~16.04.1","4.13.0-21.24~16.04.1","4.13.0-25.29~16.04.2","4.15.0-13.14~16.04.1","4.15.0-15.16~16.04.1","4.15.0-20.21~16.04.1","4.15.0-22.24~16.04.1","4.15.0-23.25~16.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"block-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"block-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"crypto-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"crypto-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"dasd-extra-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"dasd-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fat-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fat-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fb-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"firewire-core-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"floppy-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fs-core-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fs-core-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fs-secondary-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"fs-secondary-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"input-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"input-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"ipmi-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"ipmi-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"irda-modules-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"irda-modules-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"kernel-image-4.15.0-23-generic-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"kernel-image-4.15.0-23-generic-lpae-di","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-cloud-tools-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-cloud-tools-4.15.0-23-lowlatency","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-headers-4.15.0-23","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-headers-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-headers-4.15.0-23-generic-lpae","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-headers-4.15.0-23-lowlatency","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-hwe-edge-cloud-tools-4.15.0-23","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-hwe-edge-tools-4.15.0-23","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-hwe-edge-udebs-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-hwe-edge-udebs-generic-lpae","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-image-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-image-4.15.0-23-generic-lpae","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-image-4.15.0-23-lowlatency","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-image-unsigned-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-image-unsigned-4.15.0-23-lowlatency","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-modules-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-modules-4.15.0-23-generic-lpae","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-modules-4.15.0-23-lowlatency","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-modules-extra-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-source-4.15.0","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-tools-4.15.0-23-generic","binary_version":"4.15.0-23.25~16.04.1"},{"binary_name":"linux-tools-4.15.0-23-generic-lpae"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