CVE-2022-49137Medium· 5.5▾ SunlitIn 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 13.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
0.3% → 0.3%
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.
linux_kernel < 4.19.238linux_kernel >= 4.20, < 5.4.189linux_kernel >= 5.5, < 5.10.111linux_kernel >= 5.11, < 5.15.34linux_kernel >= 5.16, < 5.16.20linux_kernel >= 5.17, < 5.17.3Upgrade past the affected range:
linux_kernel 5.17.3Connected by shared product, vendor, weakness, or advisory.
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