CVE-2026-43035

linux: In the Linux kernel, the following vulnerability has been resolved: net: sched: cls_api: fix tc_chain_fill_node to i...

CVE-2026-43035 is fixed in 109 products on 1 platform, first by ALAS2023-2026-1695, released May 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.5
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: net: sched: cls_api: fix tc_chain_fill_node to initialize tcm_info to zero to prevent an info-leak When building netlink messages, tc_chain_fill_node() never initializes the tcm_info field of struct tcmsg. Since the allocation is not zeroed, kernel heap memory is leaked to userspace through this 4-byte field. The fix simply zeroes tcm_info alongside the other fields that are already initialized.

Where it's fixed

ProductFixed inFixReleased
Linux
bpftool · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
bpftool-debuginfo · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
bpftool6.12 · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
bpftool6.12-debuginfo · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
bpftool6.18 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
bpftool6.18-debuginfo · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
dtb-aarch64 · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-64kb · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-64kb · sles 15.7 6.4.0-150700.53.63.1 SUSE-SU-2026:2722-1 Jul 1, 2026
kernel-64kb · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-azure · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-azure · sles 15.7 6.4.0-150700.53.63.1 SUSE-SU-2026:2722-1 Jul 1, 2026
kernel-azure · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-debuginfo · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-debuginfo-common-aarch64 · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-debuginfo-common-x86_64 · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-default · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-default · sles 15.7 6.4.0-150700.53.63.1 SUSE-SU-2026:2722-1 Jul 1, 2026
kernel-default · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-default-base · opensuse-leap 16.0 6.12.0-160000.36.1.160000.2.17 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-default-base · sles 15.7 6.4.0-150700.53.63.1.150700.17.37.1 SUSE-SU-2026:2722-1 Jul 1, 2026
kernel-default-base · sles 16.0 6.12.0-160000.36.1.160000.2.17 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-devel · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-docs · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-docs · sles 15.7 6.4.0-150700.53.63.1 SUSE-SU-2026:2722-1 Jul 1, 2026
kernel-docs · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-headers · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-kvmsmall · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-kvmsmall · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-libbpf · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-libbpf-debuginfo · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-libbpf-devel · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-libbpf-static · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-livepatch-6.1.168-202.320 · amzn 2023 1:1.0-0.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-livepatch-6.12.83-113.160 · amzn 2023 1:1.0-0.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel-livepatch-6.18.25-52.107 · amzn 2023 1:1.0-0.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel-livepatch-SLE15-SP7-RT_Update_17 · sles 15.7 1-150700.1.3.1 SUSE-SU-2026:2799-1 Jul 8, 2026
kernel-livepatch-SLE15-SP7_Update_17 · sles 15.7 1-150700.15.3.1 SUSE-SU-2026:2722-1 Jul 1, 2026
kernel-modules-extra · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-modules-extra-common · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-obs-build · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-obs-build · sles 15.7 6.4.0-150700.53.63.1 SUSE-SU-2026:2722-1 Jul 1, 2026
kernel-obs-qa · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-obs-qa · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-rt · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-source · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-source · sles 15.7 6.4.0-150700.53.63.1 SUSE-SU-2026:2722-1 Jul 1, 2026
kernel-source · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-syms · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-syms · sles 15.7 6.4.0-150700.53.63.1 SUSE-SU-2026:2722-1 Jul 1, 2026
kernel-syms · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-tools · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-tools-debuginfo · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
kernel-tools-devel · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 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 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-zfcpdump · sles 15.7 6.4.0-150700.53.63.1 SUSE-SU-2026:2722-1 Jul 1, 2026
kernel-zfcpdump · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel6.12 · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.12-debuginfo · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.12-debuginfo-common-aarch64 · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.12-debuginfo-common-x86_64 · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.12-devel · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.12-headers · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.12-modules-extra · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.12-modules-extra-common · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.12-tools · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.12-tools-debuginfo · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.12-tools-devel · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
kernel6.18 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-debuginfo · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-debuginfo-common-aarch64 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-debuginfo-common-x86_64 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-devel · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-headers · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-modules-extra · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-modules-extra-common · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-tools · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-tools-debuginfo · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
kernel6.18-tools-devel · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
linux · Debian 12.15 (bookworm) 6.1.170-1 DEBIAN-CVE-2026-43035 May 15, 2026
linux · Debian 13.5 (trixie) 6.12.85-1 DEBIAN-CVE-2026-43035 May 15, 2026
linux · Debian 14 6.19.12-1 DEBIAN-CVE-2026-43035 May 15, 2026
perf · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
perf-debuginfo · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
perf6.12 · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
perf6.12-debuginfo · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
perf6.18 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
perf6.18-debuginfo · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
python3-perf · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
python3-perf-debuginfo · amzn 2023 1:6.1.168-202.320.amzn2023 ALAS2023-2026-1681 May 11, 2026
python3-perf6.12 · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
python3-perf6.12-debuginfo · amzn 2023 1:6.12.83-113.160.amzn2023 ALAS2023-2026-1695 May 8, 2026
python3-perf6.18 · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026
python3-perf6.18-debuginfo · amzn 2023 1:6.18.25-52.107.amzn2023 ALAS2023-2026-1746 May 25, 2026

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