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.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade kernel-livepatch-5.10.197-186.748Upgrade python-perfUpgrade bpftool-debuginfoUpgrade kernel-tools-develUpgrade perf-debuginfoUpgrade perfUpgrade kernel-develUpgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade kernelUpgrade kernel-livepatch-5.15.133-86.144Upgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade kernel-livepatch-4.14.326-245.539 | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-libbpfUpgrade bpftoolUpgrade kernel-libbpf-staticUpgrade python3-perfUpgrade kernel-develUpgrade kernel-headersUpgrade kernel-libbpf-develUpgrade kernelUpgrade kernel-livepatch-6.1.55-75.123Upgrade kernel-tools-debuginfoUpgrade perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-debuginfoUpgrade perf | 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 kernel-tools-libsUpgrade kernelUpgrade kernel-tools | Jan 15, 2026 | Jan 13, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernelUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade python3-perf | Dec 12, 2025 | Dec 11, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-toolsUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade python3-perf | Dec 12, 2025 | Dec 11, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Oct 1, 2025 |
| Ubuntu | — | Upgrade linux-raspi-5.4Upgrade linux-gcp-5.4Upgrade linux-gcp-fipsUpgrade linux-hwe-5.4Upgrade linux-aws-fipsUpgrade linux-kvmUpgrade linux-nvidia-tegra-igxUpgrade linux-gcpUpgrade linux-intel-iot-realtimeUpgrade linux-xilinx-zynqmpUpgrade linux-oracleUpgrade linux-gcp-5.15Upgrade linux-azure-5.4Upgrade linux-gkeopUpgrade linux-intel-iotg-5.15Upgrade linux-awsUpgrade linux-azureUpgrade linux-azure-fde-5.15Upgrade linux-nvidiaUpgrade linux-azure-fipsUpgrade linux-iotUpgrade linux-ibmUpgrade linux-azure-5.15Upgrade linux-fipsUpgrade linux-oracle-5.15Upgrade linux-lowlatencyUpgrade linux-lowlatency-hwe-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-ibm-5.15Upgrade linux-nvidia-tegraUpgrade linux-aws-5.15Upgrade linuxUpgrade linux-aws-5.4Upgrade linux-ibm-5.4Upgrade linux-raspiUpgrade linux-bluefieldUpgrade linux-oracle-5.4Upgrade linux-realtimeUpgrade linux-gkeUpgrade linux-riscv-5.15Upgrade linux-hwe-5.15Upgrade linux-intel-iotg | 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 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub