In the Linux kernel, the following vulnerability has been resolved:
kobject: Add sanity check for kset->kobj.ktype in kset_register()
When I register a kset in the following way: static struct kset my_kset; kobject_set_name(&my_kset.kobj, "my_kset"); ret = kset_register(&my_kset);
A null pointer dereference exception is occurred: [ 4453.568337] Unable to handle kernel NULL pointer dereference at \ virtual address 0000000000000028 ... ... [ 4453.810361] Call trace: [ 4453.813062] kobject_get_ownership+0xc/0x34 [ 4453.817493] kobject_add_internal+0x98/0x274 [ 4453.822005] kset_register+0x5c/0xb4 [ 4453.825820] my_kobj_init+0x44/0x1000 [my_kset] ... ...
Because I didn't initialize my_kset.kobj.ktype.
According to the description in Documentation/core-api/kobject.rst: - A ktype is the type of object that embeds a kobject. Every structure that embeds a kobject needs a corresponding ktype.
So add sanity check to make sure kset->kobj.ktype is not NULL.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-toolsUpgrade bpftoolUpgrade kernel-livepatch-5.10.197-186.748Upgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade bpftool-debuginfoUpgrade perfUpgrade kernel-develUpgrade perf-debuginfoUpgrade python-perfUpgrade kernel-livepatch-5.15.133-86.144Upgrade kernel-livepatch-4.14.326-245.539Upgrade python-perf-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-tools-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernelUpgrade python3-perf-debuginfoUpgrade bpftoolUpgrade kernel-libbpf-develUpgrade python3-perfUpgrade kernel-develUpgrade kernel-tools-develUpgrade kernel-livepatch-6.1.55-75.123Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-libbpf-staticUpgrade perfUpgrade kernel-libbpfUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade bpftool-debuginfo | Oct 16, 2025 | Oct 1, 2025 |
| Debian | — | Upgrade linux | Oct 3, 2025 | Oct 3, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-tools | Jan 15, 2026 | Jan 13, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel-toolsUpgrade kernelUpgrade kernel-tools-libs | Dec 12, 2025 | Dec 11, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade python3-perf | Dec 12, 2025 | Dec 11, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Oct 1, 2025 |
| Ubuntu | — | Upgrade linux-hwe-5.15Upgrade linux-gkeUpgrade linux-raspiUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azureUpgrade linux-aws-fipsUpgrade linux-gcpUpgrade linux-gcp-5.15Upgrade linux-azure-5.15Upgrade linux-gkeopUpgrade linux-nvidia-tegra-igxUpgrade linux-awsUpgrade linux-ibmUpgrade linux-kvmUpgrade linux-intel-iotg-5.15Upgrade linux-gcp-fipsUpgrade linux-raspi-5.4Upgrade linux-gcp-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-xilinx-zynqmpUpgrade linux-azure-fipsUpgrade linux-nvidiaUpgrade linux-hwe-5.4Upgrade linux-oracleUpgrade linux-azure-5.4Upgrade linux-iotUpgrade linux-azure-fde-5.15Upgrade linux-intel-iotgUpgrade linux-bluefieldUpgrade linux-ibm-5.15Upgrade linux-aws-5.4Upgrade linux-lowlatencyUpgrade linux-oracle-5.15Upgrade linux-nvidia-tegraUpgrade linux-nvidia-tegra-5.15Upgrade linux-realtimeUpgrade linux-fipsUpgrade linux-riscv-5.15Upgrade linux-oracle-5.4Upgrade linux-ibm-5.4Upgrade linux-aws-5.15Upgrade linuxUpgrade linux-azure-fde | Oct 10, 2025 | Oct 1, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Oct 1, 2025 |
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