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In the Linux kernel, the following vulnerability has been resolved:
kheaders: Use array declaration instead of char
Under CONFIG_FORTIFY_SOURCE, memcpy() will check the size of destination and source buffers. Defining kernel_headers_data as "char" would trip this check. Since these addresses are treated as byte arrays, define them as arrays (as done everywhere else).
This was seen with:
$ cat /sys/kernel/kheaders.tar.xz >> /dev/null
detected buffer overflow in memcpy kernel BUG at lib/string_helpers.c:1027! ... RIP: 0010:fortify_panic+0xf/0x20 [...] Call Trace: <TASK> ikheaders_read+0x45/0x50 [kheaders] kernfs_fop_read_iter+0x1a4/0x2f0 ...
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-perfUpgrade bpftoolUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-livepatch-5.15.117-72.142Upgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfoUpgrade perfUpgrade bpftool-debuginfoUpgrade kernel-tools-develUpgrade kernel-livepatch-5.10.184-174.730Upgrade python-perf-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpf-staticUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernelUpgrade kernel-libbpf-develUpgrade kernel-livepatch-6.1.29-47.49Upgrade python3-perf-debuginfoUpgrade perfUpgrade python3-perfUpgrade bpftoolUpgrade perf-debuginfoUpgrade kernel-libbpfUpgrade kernel-tools-debuginfoUpgrade kernel-tools-develUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools | Feb 20, 2026 | Dec 24, 2025 |
| Debian | — | Upgrade linux | Dec 29, 2025 | Dec 29, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 24, 2025 |
| Ubuntu | — | Upgrade linux-gcp-5.4Upgrade linux-azure-5.4Upgrade linux-kvmUpgrade linux-intel-iotg-5.15Upgrade linux-nvidia-tegra-igxUpgrade linux-bluefieldUpgrade linuxUpgrade linux-raspi-5.4Upgrade linux-hwe-5.4Upgrade linux-gcp-5.15Upgrade linux-intel-iot-realtimeUpgrade linux-azureUpgrade linux-azure-5.15Upgrade linux-gkeopUpgrade linux-awsUpgrade linux-hwe-5.15Upgrade linux-aws-fipsUpgrade linux-gcp-fipsUpgrade linux-realtimeUpgrade linux-iotUpgrade linux-ibmUpgrade linux-nvidiaUpgrade linux-aws-5.15Upgrade linux-intel-iotgUpgrade linux-azure-fdeUpgrade linux-gcpUpgrade linux-azure-fipsUpgrade linux-oracle-5.4Upgrade linux-riscv-5.15Upgrade linux-raspiUpgrade linux-ibm-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-aws-5.4Upgrade linux-lowlatency-hwe-5.15Upgrade linux-ibm-5.4Upgrade linux-lowlatencyUpgrade linux-oracle-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-gkeUpgrade linux-fipsUpgrade linux-oracleUpgrade linux-nvidia-tegra | Jan 6, 2026 | Dec 24, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 24, 2025 |
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