In the Linux kernel, the following vulnerability has been resolved:
ftrace: Also allocate and copy hash for reading of filter files
Currently the reader of set_ftrace_filter and set_ftrace_notrace just adds the pointer to the global tracer hash to its iterator. Unlike the writer that allocates a copy of the hash, the reader keeps the pointer to the filter hashes. This is problematic because this pointer is static across function calls that release the locks that can update the global tracer hashes. This can cause UAF and similar bugs.
Allocate and copy the hash for reading the filter files like it is done for the writers. This not only fixes UAF bugs, but also makes the code a bit simpler as it doesn't have to differentiate when to free the iterator's hash between writers and readers.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-perfUpgrade kernel-toolsUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-4.14.355-280.695Upgrade perfUpgrade kernel-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.15.191-132.213Upgrade kernel-tools-develUpgrade kernelUpgrade kernel-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade perf-debuginfoUpgrade kernel-headersUpgrade kernel-livepatch-5.10.242-239.961 | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade bpftool6.12Upgrade kernel-libbpf-staticUpgrade python3-perf6.12-debuginfoUpgrade python3-perfUpgrade kernel-tools-develUpgrade kernel6.12-libbpf-develUpgrade kernel6.12-libbpf-staticUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perf-debuginfoUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel6.12-toolsUpgrade kernel-libbpf-develUpgrade kernel6.12-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel6.12-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel6.12-libbpfUpgrade kernelUpgrade kernel-modules-extra-commonUpgrade kernel-tools-debuginfoUpgrade kernel6.12-tools-develUpgrade bpftool-debuginfoUpgrade kernel-develUpgrade kernel-modules-extraUpgrade kernel6.12-modules-extraUpgrade kernel-livepatch-6.12.46-66.121Upgrade kernel-headersUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade perfUpgrade kernel-libbpf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-livepatch-6.1.150-174.273Upgrade kernel6.12-modules-extra-commonUpgrade kernel6.12Upgrade perf-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-libbpfUpgrade python3-perf6.12Upgrade perf6.12Upgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-headersUpgrade kernel6.12-devel | Sep 30, 2025 | Sep 5, 2025 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Sep 25, 2025 | Sep 25, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel-tools | Jan 15, 2026 | Jan 13, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade bpftool | Dec 12, 2025 | Dec 11, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-tools-libsUpgrade bpftoolUpgrade python3-perf | Jan 15, 2026 | Jan 13, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-tools | Dec 12, 2025 | Dec 11, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Oct 14, 2025 | Sep 5, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Sep 5, 2025 |
| Ubuntu | — | Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-oem-20.04Upgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-5.15.0-1092-intel-iotgUpgrade linux-image-gkeop-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-aws-64k-6.8Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-oem-20.04dUpgrade linux-image-5.15.0-1061-xilinx-zynqmpUpgrade linux-image-5.15.0-1092-nvidiaUpgrade linux-image-azure-fips-5.15Upgrade linux-image-gcp-5.15Upgrade linux-image-5.15.0-1097-gcp-fipsUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-xilinxUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-gkeUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-5.15.0-1097-aws-fipsUpgrade linux-image-aws-64kUpgrade linux-image-raspi-nolpaeUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-gcp-6.8Upgrade linux-image-5.15.0-1101-azure-fipsUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-fipsUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-generic-6.8Upgrade linux-image-awsUpgrade linux-image-aws-64k-5.15Upgrade linux-image-kvmUpgrade linux-image-5.15.0-1096-realtimeUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-ibm-classicUpgrade linux-image-intel-iotgUpgrade linux-image-realtimeUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-fips-6.8Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-oracleUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-raspi-realtimeUpgrade linux-image-5.15.0-1089-intel-iot-realtimeUpgrade linux-image-oracle-64kUpgrade linux-image-5.15.0-1092-nvidia-lowlatencyUpgrade linux-image-oem-22.04bUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-5.15.0-1091-ibmUpgrade linux-image-fips-5.15Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-oem-22.04Upgrade linux-image-5.15.0-163-lowlatency-64kUpgrade linux-image-gcpUpgrade linux-image-5.15.0-1089-kvmUpgrade linux-image-5.15.0-1093-gkeUpgrade linux-image-azure-cvmUpgrade linux-image-5.15.0-1097-gcpUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-gke-5.15Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-5.15.0-1101-azureUpgrade linux-image-5.15.0-163-genericUpgrade linux-image-virtualUpgrade linux-image-6.8.0-100-fipsUpgrade linux-image-lowlatency-64kUpgrade linux-image-5.15.0-1091-raspiUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-ibm-6.8Upgrade linux-image-aws-5.15Upgrade linux-image-intelUpgrade linux-image-aws-lts-22.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-raspi-5.15Upgrade linux-image-oracle-5.15Upgrade linux-image-gke-6.8Upgrade linux-image-generic-64k-5.15Upgrade linux-image-5.15.0-1038-nvidia-tegra-igx-rtUpgrade linux-image-azure-fipsUpgrade linux-image-realtime-6.8.1Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1051-azureUpgrade linux-image-5.15.0-163-generic-64kUpgrade linux-image-5.15.0-1097-awsUpgrade linux-image-raspi-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-aws-fips-5.15Upgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-5.15.0-163-generic-lpaeUpgrade linux-image-ibmUpgrade linux-image-nvidiaUpgrade linux-image-kvm-5.15Upgrade linux-image-gke-64k-6.8Upgrade linux-image-gcp-fipsUpgrade linux-image-gkeop-5.15Upgrade linux-image-oem-20.04cUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-gcp-64kUpgrade linux-image-lowlatency-6.8Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-5.15.0-1049-nvidia-tegraUpgrade linux-image-azureUpgrade linux-image-virtual-5.15Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-5.15.0-1049-nvidia-tegra-rtUpgrade linux-image-virtual-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1046-awsUpgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-xilinx-6.8Upgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-64kUpgrade linux-image-oem-22.04aUpgrade linux-image-raspiUpgrade linux-image-nvidia-5.15Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-oracle-6.8Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-ibm-5.15Upgrade linux-image-oem-20.04bUpgrade linux-image-azure-lts-22.04Upgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-realtime-5.15Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-5.15.0-1102-azureUpgrade linux-image-5.15.0-1097-aws-64kUpgrade linux-image-5.15.0-1094-oracleUpgrade linux-image-5.15.0-1080-gkeopUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-gke-64kUpgrade linux-image-generic-64k-6.8Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-generic-64kUpgrade linux-image-azure-5.15Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-genericUpgrade linux-image-oem-22.04dUpgrade linux-image-aws-fipsUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-lowlatency-5.15Upgrade linux-image-gkeopUpgrade linux-image-5.15.0-163-fipsUpgrade linux-image-generic-5.15Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-oem-22.04cUpgrade linux-image-5.15.0-163-lowlatencyUpgrade linux-image-nvidia-6.8Upgrade linux-image-aws-fips-6.8Upgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-5.15.0-1038-nvidia-tegra-igx | Dec 5, 2025 | Sep 5, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 19, 2025 | Sep 5, 2025 |
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