Commit b8fab6ae authored Apr 19, 2023 by hackyzh002 Committed by Greg Kroah-Hartman Aug 30, 2023

drm/radeon: Fix integer overflow in radeon_cs_parser_init



[ Upstream commit f828b681d0cd566f86351c0b913e6cb6ed8c7b9c ]

The type of size is unsigned, if size is 0x40000000, there will be an
integer overflow, size will be zero after size *= sizeof(uint32_t),
will cause uninitialized memory to be referenced later

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: hackyzh002 <hackyzh002@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 3a3bb438

drivers/gpu/drm/radeon/radeon_cs.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -271,7 +271,8 @@ int radeon_cs_parser_init(struct radeon_cs_parser p, void data)
		{
		struct drm_radeon_cs *cs = data;
		uint64_t *chunk_array_ptr;
		unsigned size, i;
		u64 size;
		unsigned i;
		u32 ring = RADEON_CS_RING_GFX;
		s32 priority = 0;