CVE-2026-43210
linux: In the Linux kernel, the following vulnerability has been resolved: tracing: ring-buffer: Fix to check event length...
CVE-2026-43210 is fixed in 93 products on 1 platform, first by ALAS2023-2026-1543, released April 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
6.1
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0013
2nd percentile
In the Linux kernel, the following vulnerability has been resolved: tracing: ring-buffer: Fix to check event length before using Check the event length before adding it for accessing next index in rb_read_data_buffer(). Since this function is used for validating possibly broken ring buffers, the length of the event could be broken. In that case, the new event (e + len) can point a wrong address. To avoid invalid memory access at boot, check whether the length of each event is in the possible range before using it.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool6.12 · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| bpftool6.12-debuginfo · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| bpftool6.18 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| bpftool6.18-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| dtb-aarch64 · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-64kb · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-64kb · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-azure · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-azure · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-default · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-default · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24197-1 | Nov 7, 2026 |
| kernel-default-base · opensuse-leap 16.0 | 6.12.0-160000.39.1.160000.2.25 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-default-base · sles 16.0 | 6.12.0-160000.39.1.160000.2.26 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-docs · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-docs · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-kvmsmall · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-kvmsmall · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-livepatch-6.12.77-99.140 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel-livepatch-6.18.16-18.222 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel-obs-build · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-obs-qa · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-obs-qa · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-rt · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-source · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-source · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-syms · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-syms · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel-uek · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-core · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-core · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-core · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-core · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-devel · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-devel · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-core · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-core · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-deprecated · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-deprecated · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-desktop · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-desktop · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-extra · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-extra · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-extra-netfilter · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-extra-netfilter · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-usb · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-usb · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-wireless · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-debug-modules-wireless · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-devel · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-devel · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-doc · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-doc · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-core · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-core · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-deprecated · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-deprecated · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-desktop · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-desktop · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-extra · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-extra · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-extra-netfilter · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-extra-netfilter · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-usb · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-usb · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-wireless · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-modules-wireless · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-tools · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek-tools · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-core · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-core · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-devel · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-devel · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-core · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-core · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-deprecated · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-deprecated · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-desktop · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-desktop · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-extra · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-extra · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-extra-netfilter · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-extra-netfilter · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-usb · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-usb · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-wireless · ol 10 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-uek64k-modules-wireless · ol 9 | 0:6.12.0-204.92.4.2.el9uek | ELSA-2026-50372 | Jul 2, 2026 |
| kernel-zfcpdump · opensuse-leap 16.0 | 6.12.0-160000.39.1 | OPENSUSE-SU-2026:22091-1 | Nov 7, 2026 |
| kernel-zfcpdump · sles 16.0 | 6.12.0-160000.39.1 | SUSE-SU-2026:24235-1 | Nov 7, 2026 |
| kernel6.12 · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-debuginfo · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-debuginfo-common-aarch64 · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-debuginfo-common-x86_64 · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-devel · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-headers · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-libbpf · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-libbpf-debuginfo · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-libbpf-devel · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-libbpf-static · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-modules-extra · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-modules-extra-common · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-tools · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-tools-debuginfo · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.12-tools-devel · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| kernel6.18 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-debuginfo-common-aarch64 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-debuginfo-common-x86_64 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-devel · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-headers · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-libbpf · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-libbpf-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-libbpf-devel · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-libbpf-static · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-modules-extra · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-modules-extra-common · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-tools · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-tools-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-tools-devel · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.85-1 | DEBIAN-CVE-2026-43210 | May 15, 2026 |
| linux · Debian 14 | 6.19.6-1 | DEBIAN-CVE-2026-43210 | May 15, 2026 |
| perf6.12 · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| perf6.12-debuginfo · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| perf6.18 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| perf6.18-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| python3-perf6.12 · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| python3-perf6.12-debuginfo · amzn 2023 | 1:6.12.77-99.140.amzn2023 | ALAS2023-2026-1543 | Apr 7, 2026 |
| python3-perf6.18 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| python3-perf6.18-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
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