In the Linux kernel, the following vulnerability has been resolved:
LoongArch: Don't crash in stack_top() for tasks without vDSO
Not all tasks have a vDSO mapped, for example kthreads never do. If such a task ever ends up calling stack_top(), it will derefence the NULL vdso pointer and crash.
This can for example happen when using kunit:
[<9000000000203874>] stack_top+0x58/0xa8 [<90000000002956cc>] arch_pick_mmap_layout+0x164/0x220 [<90000000003c284c>] kunit_vm_mmap_init+0x108/0x12c [<90000000003c1fbc>] __kunit_add_resource+0x38/0x8c [<90000000003c2704>] kunit_vm_mmap+0x88/0xc8 [<9000000000410b14>] usercopy_test_init+0xbc/0x25c [<90000000003c1db4>] kunit_try_run_case+0x5c/0x184 [<90000000003c3d54>] kunit_generic_run_threadfn_adapter+0x24/0x48 [<900000000022e4bc>] kthread+0xc8/0xd4 [<9000000000200ce8>] ret_from_kernel_thread+0xc/0xa4
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 |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.1Upgrade linux | Nov 11, 2024 | Nov 5, 2024 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1026-nvidia-lowlatencyUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.8.0-1024-ibmUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-1023-gkeUpgrade linux-image-6.8.0-1024-oracleUpgrade linux-image-lowlatency-64kUpgrade linux-image-nvidiaUpgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-6.8.0-1024-oracle-64kUpgrade linux-image-6.8.0-1028-gcp-64kUpgrade linux-image-6.8.0-1027-azure-fdeUpgrade linux-image-azureUpgrade linux-image-6.8.0-1026-nvidia-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-genericUpgrade linux-image-6.8.0-58-generic-64kUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-awsUpgrade linux-image-azure-fdeUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1026-nvidia-lowlatency-64kUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-oem-22.04Upgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-58-genericUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-6.8.0-1026-nvidiaUpgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-oem-22.04dUpgrade linux-image-raspiUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1010-gkeopUpgrade linux-image-6.8.1-1020-realtimeUpgrade linux-image-gcp-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-azure-nvidiaUpgrade linux-image-gkeopUpgrade linux-image-generic-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-kvmUpgrade linux-image-6.8.0-1027-azureUpgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-gkeUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-virtualUpgrade linux-image-6.8.0-1028-gcpUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-6.8.0-58-lowlatencyUpgrade linux-image-oracleUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gcpUpgrade linux-image-6.8.0-58-lowlatency-64kUpgrade linux-image-oem-22.04bUpgrade linux-image-oem-22.04cUpgrade linux-image-oem-22.04aUpgrade linux-image-oem-24.04bUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-raspi-realtimeUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-ibmUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-oracle-64kUpgrade linux-image-oem-24.04Upgrade linux-image-6.11.0-1015-oemUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-1026-oemUpgrade linux-image-realtimeUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1027-awsUpgrade linux-image-ibm-classicUpgrade linux-image-lowlatencyUpgrade linux-image-azure-lts-24.04 | Feb 20, 2025 | Nov 5, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2025 | Nov 5, 2024 |
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