In the Linux kernel, the following vulnerability has been resolved:
MIPS: Don't crash in stack_top() for tasks without ABI or vDSO
Not all tasks have an ABI associated or vDSO mapped, for example kthreads never do. If such a task ever ends up calling stack_top(), it will derefence the NULL ABI pointer and crash.
This can for example happen when using kunit:
mips_stack_top+0x28/0xc0 arch_pick_mmap_layout+0x190/0x220 kunit_vm_mmap_init+0xf8/0x138 __kunit_add_resource+0x40/0xa8 kunit_vm_mmap+0x88/0xd8 usercopy_test_init+0xb8/0x240 kunit_try_run_case+0x5c/0x1a8 kunit_generic_run_threadfn_adapter+0x28/0x50 kthread+0x118/0x240 ret_from_kernel_thread+0x14/0x1c
Only dereference the ABI point if it is set.
The GIC page is also included as it is specific to the vDSO. Also move the randomization adjustment into the same conditional.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Sep 25, 2025 | Sep 25, 2025 |
| Ubuntu | — | Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-5.15.0-163-lowlatency-64kUpgrade linux-image-generic-6.8Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-realtime-6.8.1Upgrade linux-image-virtual-5.15Upgrade linux-image-ibmUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-generic-64k-5.15Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-generic-5.15Upgrade linux-image-5.15.0-1097-gcp-fipsUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-gcp-5.15Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-aws-6.8Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-oracleUpgrade linux-image-oem-22.04dUpgrade linux-image-5.15.0-1049-nvidia-tegraUpgrade linux-image-aws-fips-6.8Upgrade linux-image-5.15.0-1049-nvidia-tegra-rtUpgrade linux-image-oracle-5.15Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-generic-64k-6.8Upgrade linux-image-gke-5.15Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-ibm-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-ibm-5.15Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-5.15.0-1101-azureUpgrade linux-image-gcp-6.8Upgrade linux-image-raspiUpgrade linux-image-raspi-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-kvmUpgrade linux-image-lowlatency-6.8Upgrade linux-image-azure-5.15Upgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-awsUpgrade linux-image-raspi-nolpaeUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-gcp-64kUpgrade linux-image-xilinx-6.8Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-oem-22.04bUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-5.15.0-1097-aws-64kUpgrade linux-image-5.15.0-1091-ibmUpgrade linux-image-azureUpgrade linux-image-azure-cvmUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-5.15.0-1096-realtimeUpgrade linux-image-5.15.0-163-generic-lpaeUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-5.15.0-1094-oracleUpgrade linux-image-5.15.0-163-lowlatencyUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-generic-lpaeUpgrade linux-image-aws-64k-6.8Upgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-gke-64kUpgrade linux-image-aws-lts-22.04Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-5.15.0-1038-nvidia-tegra-igx-rtUpgrade linux-image-virtual-6.8Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-azure-fipsUpgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-64k-5.15Upgrade linux-image-aws-fipsUpgrade linux-image-aws-fips-5.15Upgrade linux-image-fipsUpgrade linux-image-5.15.0-1080-gkeopUpgrade linux-image-gcp-fipsUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-5.15.0-1101-azure-fipsUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-5.15.0-1097-aws-fipsUpgrade linux-image-5.15.0-1092-nvidiaUpgrade linux-image-5.15.0-1038-nvidia-tegra-igxUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-oem-20.04dUpgrade linux-image-lowlatency-5.15Upgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-5.15.0-1091-raspiUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-5.15.0-163-fipsUpgrade linux-image-5.15.0-1097-gcpUpgrade linux-image-5.15.0-1089-intel-iot-realtimeUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-kvm-5.15Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-lowlatencyUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-gke-64k-6.8Upgrade linux-image-5.15.0-1092-nvidia-lowlatencyUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-fips-5.15Upgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1093-gkeUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-5.15.0-1092-intel-iotgUpgrade linux-image-5.15.0-1097-awsUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-oracle-64kUpgrade linux-image-generic-64kUpgrade linux-image-5.15.0-1102-azureUpgrade linux-image-5.15.0-1089-kvmUpgrade linux-image-nvidia-5.15Upgrade linux-image-gcpUpgrade linux-image-azure-lts-22.04Upgrade linux-image-oem-22.04cUpgrade linux-image-oem-22.04Upgrade linux-image-gkeUpgrade linux-image-xilinxUpgrade linux-image-azure-6.8Upgrade linux-image-oem-20.04cUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-nvidiaUpgrade linux-image-realtime-5.15Upgrade linux-image-oracle-6.8Upgrade linux-image-gkeopUpgrade linux-image-aws-5.15Upgrade linux-image-6.8.0-1051-azureUpgrade linux-image-5.15.0-163-genericUpgrade linux-image-genericUpgrade linux-image-gke-6.8Upgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-nvidia-tegraUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-5.15.0-1061-xilinx-zynqmpUpgrade linux-image-virtualUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-aws-64kUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-intelUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-oem-20.04Upgrade linux-image-realtimeUpgrade linux-image-azure-fips-5.15Upgrade linux-image-fips-6.8Upgrade linux-image-gkeop-5.15Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-raspi-5.15Upgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-nvidia-64kUpgrade linux-image-5.15.0-163-generic-64kUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-azure-fips-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-oem-20.04bUpgrade linux-image-generic-lpae-hwe-20.04 | Dec 5, 2025 | Sep 4, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 19, 2025 | Sep 4, 2025 |
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