drm/amdgpu: add upper bound check on user inputs in signal ioctl

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commit ea78f8c68f upstream.

Huge input values in amdgpu_userq_signal_ioctl can lead to a OOM and
could be exploited.

So check these input value against AMDGPU_USERQ_MAX_HANDLES
which is big enough value for genuine use cases and could
potentially avoid OOM.

Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit be267e15f9)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Sunil Khatri 2026-02-20 13:47:58 +05:30 • committed by Greg Kroah-Hartman

parent 6bfda7ce56

commit 6fff5204d8

1 changed files with 7 additions and 0 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c

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