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CVE-2022-49137

In the Linux kernel, the following vulnerability has been resolved: drm/amd/amdgpu/amdgpu_cs: fix refcount leak of a dma_fence obj This issue takes place in an…

Impact

In the Linux kernel, the following vulnerability has been resolved: drm/amd/amdgpu/amdgpu_cs: fix refcount leak of a dma_fence obj This issue takes place in an error path in amdgpu_cs_fence_to_handle_ioctl(). When `info->in.what` falls into default case, the function simply returns -EINVAL, forgetting to decrement the reference count of a dma_fence obj, which is bumped earlier by amdgpu_cs_get_fence(). This may result in reference count leaks. Fix it by decreasing the refcount of specific object before returning the error code.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
before 4.19.238
from 4.20 before 5.4.189
from 5.5 before 5.10.111
from 5.11 before 5.15.34
from 5.16 before 5.16.20
from 5.17 before 5.17.3

References