Harry Wentland 201151e120 drm/amd/display: Use krealloc_array() in dal_vector_reserve() ...

commit da48bc4461 upstream.

[Why & How]
dal_vector_reserve() computes the allocation size as
"capacity * vector->struct_size" using uint32_t arithmetic, which can
silently wrap to a small value on overflow. This would cause krealloc to
return a smaller buffer than expected, leading to heap overflows on
subsequent vector appends.

Replace krealloc() with krealloc_array() which performs an internal
overflow check and returns NULL on wrap, preventing the issue.

Fixes: 2004f45ef8 ("drm/amd/display: Use kernel alloc/free")
Assisted-by: Copilot:claude-opus-4.6
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3766856864)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-06-19 13:39:37 +02:00

..

drm

drm/amd/display: Use krealloc_array() in dal_vector_reserve()

2026-06-19 13:39:37 +02:00

host1x

gpu: host1x: Fix race in syncpt alloc/free

2026-01-11 15:21:11 +01:00

ipu-v3

…

trace

…

vga

…

Makefile

…