CVE-2025-68190
BaseFortify
Publication date: 2025-12-16
Last updated on: 2025-12-18
Assigner: kernel.org
Description
Description
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability occurs in the Linux kernel's amdgpu driver where a memory allocation function, kcalloc(), may fail when allocating a workspace (WS) buffer. If the allocation fails, the code does not properly handle the failure and leaves a pointer (ectx.ws) as NULL while setting a size variable (ectx.ws_size). Later, when the code tries to access this NULL pointer in atom_get_src_int(), it can cause a NULL pointer dereference, potentially leading to a kernel crash or instability. The fix involves returning an error (-ENOMEM) when allocation fails to prevent this NULL dereference.
How can this vulnerability impact me? :
This vulnerability can cause a NULL pointer dereference in the Linux kernel, which may lead to a kernel crash or system instability. This can result in denial of service (DoS) conditions where the affected system becomes unresponsive or requires a reboot.
What immediate steps should I take to mitigate this vulnerability?
The immediate step to mitigate this vulnerability is to update the Linux kernel to a version where the issue in drm/amdgpu/atom related to kcalloc() failure handling has been fixed. This update ensures that the kernel returns -ENOMEM on allocation failure, preventing the NULL pointer dereference.