CVE-2024-26797: drm/amd/display: Prevent potential buffer overflow in map_hw_resources
First published: Thu Apr 04 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Prevent potential buffer overflow in map_hw_resources Adds a check in the map_hw_resources function to prevent a potential buffer overflow. The function was accessing arrays using an index that could potentially be greater than the size of the arrays, leading to a buffer overflow. Adds a check to ensure that the index is within the bounds of the arrays. If the index is out of bounds, an error message is printed and break it will continue execution with just ignoring extra data early to prevent the buffer overflow. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/dml2_wrapper.c:79 map_hw_resources() error: buffer overflow 'dml2->v20.scratch.dml_to_dc_pipe_mapping.disp_cfg_to_stream_id' 6 <= 7 drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/dml2_wrapper.c:81 map_hw_resources() error: buffer overflow 'dml2->v20.scratch.dml_to_dc_pipe_mapping.disp_cfg_to_plane_id' 6 <= 7
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=6.7<6.7.9 | |
| Linux Kernel | =6.8-rc1 | |
| Linux Kernel | =6.8-rc2 | |
| Linux Kernel | =6.8-rc3 | |
| Linux Kernel | =6.8-rc4 | |
| Linux Kernel | =6.8-rc5 | |
| Linux Kernel | =6.8-rc6 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-26797?
CVE-2024-26797 is classified as a medium severity vulnerability.
How do I fix CVE-2024-26797?
To fix CVE-2024-26797, ensure you update to the latest version of the Linux kernel that includes the patch.
What type of vulnerability is CVE-2024-26797?
CVE-2024-26797 is a buffer overflow vulnerability in the Linux kernel's DRM AMD display subsystem.
Which systems are affected by CVE-2024-26797?
CVE-2024-26797 affects all systems running vulnerable versions of the Linux kernel.
What impact does CVE-2024-26797 have on systems?
CVE-2024-26797 could potentially lead to privilege escalation or system crashes due to the buffer overflow.
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