From: David Rosca <david.rosca@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Cc: David Rosca <david.rosca@amd.com>
Subject: [PATCH 1/4] drm/amdgpu: Reject UVD message with dimensions above 4096
Date: Thu, 30 Jul 2026 19:02:28 +0200 [thread overview]
Message-ID: <20260730170230.11930-2-david.rosca@amd.com> (raw)
Fixes potential overflow in DPB size calculations.
Signed-off-by: David Rosca <david.rosca@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
index e8b0c62f72be..63561d1d7963 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -655,8 +655,8 @@ static int amdgpu_uvd_cs_msg_decode(struct amdgpu_device *adev, uint32_t *msg,
unsigned int image_size, tmp, min_dpb_size, num_dpb_buffer;
unsigned int min_ctx_size = ~0;
- /* Reject invalid dimensions to prevent division by zero */
- if (width < 16 || height < 16) {
+ /* Reject invalid dimensions */
+ if (width < 16 || height < 16 || width > 4096 || height > 4096) {
dev_WARN_ONCE(adev->dev, 1,
"Invalid UVD decoding dimensions (%dx%d)!\n",
width, height);
--
2.43.0
next reply other threads:[~2026-07-30 17:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-30 17:02 David Rosca [this message]
2026-07-30 17:02 ` [PATCH 2/4] drm/amdgpu: Fix UVD dpb min size calculation for H264 David Rosca
2026-07-30 17:02 ` [PATCH 3/4] drm/amdgpu: Fix UVD decode image min size calculation David Rosca
2026-07-30 17:02 ` [PATCH 4/4] drm/amdgpu: Fix UVD min buffer sizes David Rosca
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