Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 6.1 03/41] drm/radeon: Fix integer overflow in radeon_cs_parser_init | Date | Sun, 23 Jul 2023 21:20:36 -0400 |
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From: hackyzh002 <hackyzh002@gmail.com>
[ 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> --- drivers/gpu/drm/radeon/radeon_cs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index 446f7bae54c4e..e3664f65d1a9c 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -270,7 +270,8 @@ 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; -- 2.39.2
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