Use-after-free in Linux kernel - CVE-2024-43891

Vulnerability identifier: #VU96514

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-43891

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the trigger_start(), event_trigger_regex_open() and event_trigger_regex_write() functions in kernel/trace/trace_events_trigger.c, within the event_inject_write() function in kernel/trace/trace_events_inject.c, within the hist_show() and hist_debug_show() functions in kernel/trace/trace_events_hist.c, within the event_enable_read(), event_enable_write(), f_next(), f_show(), event_filter_read(), event_filter_write() and event_callback() functions in kernel/trace/trace_events.c. A local user can escalate privileges on the system.

Linux kernel
Ubuntu
openEuler
bpftool
kernel
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-source
kernel-headers
kernel-devel
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
linux-image-6.8.0-50-generic-64k (Ubuntu package)
linux-image-6.8.0-50-generic (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic-64k-hwe-24.04 (Ubuntu package)
linux-image-generic-hwe-24.04 (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-virtual-hwe-24.04 (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-lowlatency-64k-hwe-24.04 (Ubuntu package)
linux-image-lowlatency-hwe-24.04 (Ubuntu package)
linux-image-6.8.0-50-lowlatency (Ubuntu package)
linux-image-6.8.0-50-lowlatency-64k (Ubuntu package)
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-hwe-22.04 (Ubuntu package)
linux-image-generic-64k-hwe-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-oem-22.04 (Ubuntu package)
linux-image-oem-22.04a (Ubuntu package)
linux-image-oem-22.04b (Ubuntu package)
linux-image-oem-22.04c (Ubuntu package)
linux-image-oem-22.04d (Ubuntu package)
linux-image-virtual-hwe-22.04 (Ubuntu package)
linux-image-gkeop-6.8 (Ubuntu package)
linux-image-6.8.0-1002-gkeop (Ubuntu package)
linux-image-gkeop (Ubuntu package)
linux-image-6.8.0-1015-gke (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-6.8.0-1016-raspi (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-6.8.0-1017-ibm (Ubuntu package)
linux-image-ibm-lts-24.04 (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-ibm-classic (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-6.8.0-1017-oracle-64k (Ubuntu package)
linux-image-6.8.0-1017-oracle (Ubuntu package)
linux-image-oracle-64k (Ubuntu package)
linux-image-6.8.0-1018-oem (Ubuntu package)
linux-image-oem-24.04a (Ubuntu package)
linux-image-oem-24.04 (Ubuntu package)
linux-image-6.8.0-1019-nvidia-64k (Ubuntu package)
linux-image-6.8.0-1019-nvidia (Ubuntu package)
linux-image-6.8.0-1019-gcp (Ubuntu package)
linux-image-nvidia (Ubuntu package)
linux-image-nvidia-64k (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-6.8.0-1019-nvidia-lowlatency (Ubuntu package)
linux-image-6.8.0-1019-nvidia-lowlatency-64k (Ubuntu package)
linux-image-nvidia-lowlatency (Ubuntu package)
linux-image-nvidia-lowlatency-64k (Ubuntu package)
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package)
linux-image-nvidia-64k-6.8 (Ubuntu package)
linux-image-nvidia-6.8 (Ubuntu package)
linux-image-nvidia-hwe-22.04 (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-6.8.0-1020-aws (Ubuntu package)
linux-image-6.8.0-1020-azure (Ubuntu package)
linux-image-6.8.0-1020-azure-fde (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-azure-fde (Ubuntu package)

Install update from vendor's website.

Linux kernel - addressed in versions 6.6.49, 6.10.5, 6.11
bpftool - update to 6.6.0-41.0.0.48
kernel - update to 6.6.0-41.0.0.48
python3-perf-debuginfo - update to 6.6.0-41.0.0.48
python3-perf - update to 6.6.0-41.0.0.48
perf-debuginfo - update to 6.6.0-41.0.0.48
perf - update to 6.6.0-41.0.0.48
kernel-tools-devel - update to 6.6.0-41.0.0.48
kernel-tools-debuginfo - update to 6.6.0-41.0.0.48
kernel-tools - update to 6.6.0-41.0.0.48
kernel-source - update to 6.6.0-41.0.0.48
kernel-headers - update to 6.6.0-41.0.0.48
kernel-devel - update to 6.6.0-41.0.0.48
kernel-debugsource - update to 6.6.0-41.0.0.48
kernel-debuginfo - update to 6.6.0-41.0.0.48
bpftool-debuginfo - update to 6.6.0-41.0.0.48
linux-image-6.8.0-50-generic-64k (Ubuntu package) - addressed in versions 6.8.0-50.51, 6.8.0-50.51~22.04.1
linux-image-6.8.0-50-generic (Ubuntu package) - addressed in versions 6.8.0-50.51, 6.8.0-50.51~22.04.1
linux-image-generic (Ubuntu package) - update to 6.8.0-50.51
linux-image-generic-64k (Ubuntu package) - update to 6.8.0-50.51
linux-image-generic-64k-hwe-24.04 (Ubuntu package) - update to 6.8.0-50.51
linux-image-generic-hwe-24.04 (Ubuntu package) - update to 6.8.0-50.51
linux-image-generic-lpae (Ubuntu package) - update to 6.8.0-50.51
linux-image-kvm (Ubuntu package) - update to 6.8.0-50.51
linux-image-virtual (Ubuntu package) - update to 6.8.0-50.51
linux-image-virtual-hwe-24.04 (Ubuntu package) - update to 6.8.0-50.51
linux-image-lowlatency (Ubuntu package) - update to 6.8.0-50.51.1
linux-image-lowlatency-64k (Ubuntu package) - update to 6.8.0-50.51.1
linux-image-lowlatency-64k-hwe-24.04 (Ubuntu package) - update to 6.8.0-50.51.1
linux-image-lowlatency-hwe-24.04 (Ubuntu package) - update to 6.8.0-50.51.1
linux-image-6.8.0-50-lowlatency (Ubuntu package) - addressed in versions 6.8.0-50.51.1, 6.8.0-50.51.1~22.04.1
linux-image-6.8.0-50-lowlatency-64k (Ubuntu package) - addressed in versions 6.8.0-50.51.1, 6.8.0-50.51.1~22.04.1
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package) - update to 6.8.0-50.51.1~22.04.1
linux-image-lowlatency-hwe-22.04 (Ubuntu package) - update to 6.8.0-50.51.1~22.04.1
linux-image-generic-64k-hwe-22.04 (Ubuntu package) - update to 6.8.0-50.51~22.04.1
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 6.8.0-50.51~22.04.1
linux-image-oem-22.04 (Ubuntu package) - update to 6.8.0-50.51~22.04.1
linux-image-oem-22.04a (Ubuntu package) - update to 6.8.0-50.51~22.04.1
linux-image-oem-22.04b (Ubuntu package) - update to 6.8.0-50.51~22.04.1
linux-image-oem-22.04c (Ubuntu package) - update to 6.8.0-50.51~22.04.1
linux-image-oem-22.04d (Ubuntu package) - update to 6.8.0-50.51~22.04.1
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 6.8.0-50.51~22.04.1
linux-image-gkeop-6.8 (Ubuntu package) - update to 6.8.0-1002.4
linux-image-6.8.0-1002-gkeop (Ubuntu package) - update to 6.8.0-1002.4
linux-image-gkeop (Ubuntu package) - update to 6.8.0-1002.4
linux-image-6.8.0-1015-gke (Ubuntu package) - update to 6.8.0-1015.19
linux-image-gke (Ubuntu package) - update to 6.8.0-1015.19
linux-image-6.8.0-1016-raspi (Ubuntu package) - update to 6.8.0-1016.18
linux-image-raspi (Ubuntu package) - update to 6.8.0-1016.18
linux-image-6.8.0-1017-ibm (Ubuntu package) - update to 6.8.0-1017.17
linux-image-ibm-lts-24.04 (Ubuntu package) - update to 6.8.0-1017.17
linux-image-ibm (Ubuntu package) - update to 6.8.0-1017.17
linux-image-ibm-classic (Ubuntu package) - update to 6.8.0-1017.17
linux-image-oracle (Ubuntu package) - addressed in versions 6.8.0-1017.18, 6.8.0-1017.18~22.04.1
linux-image-6.8.0-1017-oracle-64k (Ubuntu package) - addressed in versions 6.8.0-1017.18, 6.8.0-1017.18~22.04.1
linux-image-6.8.0-1017-oracle (Ubuntu package) - addressed in versions 6.8.0-1017.18, 6.8.0-1017.18~22.04.1
linux-image-oracle-64k (Ubuntu package) - addressed in versions 6.8.0-1017.18, 6.8.0-1017.18~22.04.1
linux-image-6.8.0-1018-oem (Ubuntu package) - update to 6.8.0-1018.18
linux-image-oem-24.04a (Ubuntu package) - update to 6.8.0-1018.18
linux-image-oem-24.04 (Ubuntu package) - update to 6.8.0-1018.18
linux-image-6.8.0-1019-nvidia-64k (Ubuntu package) - addressed in versions 6.8.0-1019.21, 6.8.0-1019.21~22.04.1
linux-image-6.8.0-1019-nvidia (Ubuntu package) - addressed in versions 6.8.0-1019.21, 6.8.0-1019.21~22.04.1
linux-image-6.8.0-1019-gcp (Ubuntu package) - addressed in versions 6.8.0-1019.21, 6.8.0-1019.21~22.04.1
linux-image-nvidia (Ubuntu package) - update to 6.8.0-1019.21
linux-image-nvidia-64k (Ubuntu package) - update to 6.8.0-1019.21
linux-image-gcp (Ubuntu package) - addressed in versions 6.8.0-1019.21, 6.8.0-1019.21~22.04.1
linux-image-6.8.0-1019-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1019.21.1
linux-image-6.8.0-1019-nvidia-lowlatency-64k (Ubuntu package) - update to 6.8.0-1019.21.1
linux-image-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1019.21.1
linux-image-nvidia-lowlatency-64k (Ubuntu package) - update to 6.8.0-1019.21.1
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package) - update to 6.8.0-1019.21~22.04.1
linux-image-nvidia-64k-6.8 (Ubuntu package) - update to 6.8.0-1019.21~22.04.1
linux-image-nvidia-6.8 (Ubuntu package) - update to 6.8.0-1019.21~22.04.1
linux-image-nvidia-hwe-22.04 (Ubuntu package) - update to 6.8.0-1019.21~22.04.1
linux-image-aws (Ubuntu package) - addressed in versions 6.8.0-1020.22, 6.8.0-1020.22~22.04.1
linux-image-6.8.0-1020-aws (Ubuntu package) - addressed in versions 6.8.0-1020.22, 6.8.0-1020.22~22.04.1
linux-image-6.8.0-1020-azure (Ubuntu package) - addressed in versions 6.8.0-1020.23, 6.8.0-1020.23~22.04.1
linux-image-6.8.0-1020-azure-fde (Ubuntu package) - addressed in versions 6.8.0-1020.23, 6.8.0-1020.23~22.04.1
linux-image-azure (Ubuntu package) - addressed in versions 6.8.0-1020.23, 6.8.0-1020.23~22.04.1
linux-image-azure-fde (Ubuntu package) - addressed in versions 6.8.0-1020.23, 6.8.0-1020.23~22.04.1

• https://git.kernel.org/stable/c/531dc6780d94245af037c25c2371c8caf652f0f9
• https://git.kernel.org/stable/c/b1560408692cd0ab0370cfbe9deb03ce97ab3f6d
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.5
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.49

• Use-after-free in Linux kernel trace
• openEuler 24.03 LTS update for kernel
• Ubuntu update for linux-gkeop
• Ubuntu update for linux-nvidia
• Ubuntu update for linux
• Ubuntu update for linux-hwe-6.8
• Ubuntu update for linux-azure