CVE-2024-53116: drm/panthor: Fix handling of partial GPU mapping of BOs
First published: Mon Dec 02 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Fix handling of partial GPU mapping of BOs This commit fixes the bug in the handling of partial mapping of the buffer objects to the GPU, which caused kernel warnings. Panthor didn't correctly handle the case where the partial mapping spanned multiple scatterlists and the mapping offset didn't point to the 1st page of starting scatterlist. The offset variable was not cleared after reaching the starting scatterlist. Following warning messages were seen. WARNING: CPU: 1 PID: 650 at drivers/iommu/io-pgtable-arm.c:659 __arm_lpae_unmap+0x254/0x5a0 <snip> pc : __arm_lpae_unmap+0x254/0x5a0 lr : __arm_lpae_unmap+0x2cc/0x5a0 <snip> Call trace: __arm_lpae_unmap+0x254/0x5a0 __arm_lpae_unmap+0x108/0x5a0 __arm_lpae_unmap+0x108/0x5a0 __arm_lpae_unmap+0x108/0x5a0 arm_lpae_unmap_pages+0x80/0xa0 panthor_vm_unmap_pages+0xac/0x1c8 [panthor] panthor_gpuva_sm_step_unmap+0x4c/0xc8 [panthor] op_unmap_cb.isra.23.constprop.30+0x54/0x80 __drm_gpuvm_sm_unmap+0x184/0x1c8 drm_gpuvm_sm_unmap+0x40/0x60 panthor_vm_exec_op+0xa8/0x120 [panthor] panthor_vm_bind_exec_sync_op+0xc4/0xe8 [panthor] panthor_ioctl_vm_bind+0x10c/0x170 [panthor] drm_ioctl_kernel+0xbc/0x138 drm_ioctl+0x210/0x4b0 __arm64_sys_ioctl+0xb0/0xf8 invoke_syscall+0x4c/0x110 el0_svc_common.constprop.1+0x98/0xf8 do_el0_svc+0x24/0x38 el0_svc+0x34/0xc8 el0t_64_sync_handler+0xa0/0xc8 el0t_64_sync+0x174/0x178 <snip> panthor : [drm] drm_WARN_ON(unmapped_sz != pgsize * pgcount) WARNING: CPU: 1 PID: 650 at drivers/gpu/drm/panthor/panthor_mmu.c:922 panthor_vm_unmap_pages+0x124/0x1c8 [panthor] <snip> pc : panthor_vm_unmap_pages+0x124/0x1c8 [panthor] lr : panthor_vm_unmap_pages+0x124/0x1c8 [panthor] <snip> panthor : [drm] *ERROR* failed to unmap range ffffa388f000-ffffa3890000 (requested range ffffa388c000-ffffa3890000)
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.10<6.11.10 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| Linux Kernel | =6.12-rc3 | |
| Linux Kernel | =6.12-rc4 | |
| Linux Kernel | =6.12-rc5 | |
| Linux Kernel | =6.12-rc6 | |
| Linux Kernel | =6.12-rc7 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
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Reference Links
- https://git.kernel.org/stable/c/d3e61af64b770e0038470c81f42bd1d0598f6bcc
- https://git.kernel.org/stable/c/3387e043918e154ca08d83954966a8b087fe2835
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53116
- https://nvd.nist.gov/vuln/detail/CVE-2024-53116
- https://launchpad.net/bugs/cve/CVE-2024-53116
- https://security-tracker.debian.org/tracker/CVE-2024-53116
- https://ubuntu.com/security/CVE-2024-53116
- https://git.kernel.org/linus/3387e043918e154ca08d83954966a8b087fe2835
Frequently Asked Questions
What is the severity of CVE-2024-53116?
CVE-2024-53116 has been resolved in the Linux kernel, addressing kernel warnings related to partial GPU mapping of buffer objects.
How do I fix CVE-2024-53116?
To fix CVE-2024-53116, update your Linux kernel to version 6.11.10 or later, or to any release from 6.12-rc1 to 6.12-rc7.
Which versions of the Linux kernel are affected by CVE-2024-53116?
CVE-2024-53116 affects Linux kernel versions from 6.10 up to 6.11.10 and specific 6.12 release candidates including 6.12-rc1 to 6.12-rc7.
What issue does CVE-2024-53116 address?
CVE-2024-53116 addresses improper handling of partial GPU mappings that led to kernel warnings.
Is CVE-2024-53116 a critical vulnerability?
CVE-2024-53116 is significant as it relates to GPU operation within the Linux kernel but does not indicate direct security risks like remote code execution.
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