In the Linux kernel, the following vulnerability has been resolved:
tracing: Fix null pointer dereference in tracing_err_log_open()
Fix an issue in function 'tracing_err_log_open'. The function doesn't call 'seq_open' if the file is opened only with write permissions, which results in 'file->private_data' being left as null. If we then use 'lseek' on that opened file, 'seq_lseek' dereferences 'file->private_data' in 'mutex_lock(&m->lock)', resulting in a kernel panic. Writing to this node requires root privileges, therefore this bug has very little security impact.
Tracefs node: /sys/kernel/tracing/error_log
Example Kernel panic:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000038 Call trace: mutex_lock+0x30/0x110 seq_lseek+0x34/0xb8 __arm64_sys_lseek+0x6c/0xb8 invoke_syscall+0x58/0x13c el0_svc_common+0xc4/0x10c do_el0_svc+0x24/0x98 el0_svc+0x24/0x88 el0t_64_sync_handler+0x84/0xe4 el0t_64_sync+0x1b4/0x1b8 Code: d503201f aa0803e0 aa1f03e1 aa0103e9 (c8e97d02) ---[ end trace 561d1b49c12cf8a5 ]--- Kernel panic - not syncing: Oops: Fatal exception
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.15.122-77.145Upgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade kernel-toolsUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-livepatch-5.10.192-182.736Upgrade python-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade perf-debuginfoUpgrade kernelUpgrade perfUpgrade kernel-tools-develUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-debuginfoUpgrade bpftool | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade bpftoolUpgrade perf-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perf-debuginfoUpgrade kernel-toolsUpgrade perfUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-livepatch-6.1.41-63.109Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade python3-perfUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-tools-develUpgrade kernel-libbpfUpgrade kernel-libbpf-develUpgrade kernel-libbpf-static | Oct 16, 2025 | Sep 15, 2025 |
| Debian | — | Upgrade linux | Sep 17, 2025 | Sep 17, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade bpftool | Dec 12, 2025 | Dec 11, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Sep 15, 2025 |
| Ubuntu | — | Upgrade linux-nvidia-tegra-igxUpgrade linux-bluefieldUpgrade linux-raspi-5.4Upgrade linux-gcp-5.15Upgrade linux-intel-iotgUpgrade linux-kvmUpgrade linux-nvidia-tegra-5.15Upgrade linux-awsUpgrade linux-fipsUpgrade linux-gcpUpgrade linux-ibm-5.15Upgrade linux-gcp-fipsUpgrade linux-riscv-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-realtimeUpgrade linux-intel-iotg-5.15Upgrade linux-azure-fdeUpgrade linux-intel-iot-realtimeUpgrade linux-nvidia-tegraUpgrade linux-gcp-5.4Upgrade linux-azure-5.4Upgrade linux-oracle-5.4Upgrade linux-oracle-5.15Upgrade linux-lowlatencyUpgrade linux-aws-5.15Upgrade linux-raspiUpgrade linux-hwe-5.15Upgrade linux-azure-fde-5.15Upgrade linux-oracleUpgrade linux-azureUpgrade linux-gkeopUpgrade linux-hwe-5.4Upgrade linux-xilinx-zynqmpUpgrade linux-ibmUpgrade linux-aws-5.4Upgrade linux-azure-fipsUpgrade linux-iotUpgrade linux-gkeUpgrade linux-ibm-5.4Upgrade linux-nvidiaUpgrade linux-azure-5.15Upgrade linux-aws-fipsUpgrade linux | Sep 19, 2025 | Sep 16, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Sep 15, 2025 |
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