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fix(draw_buf): check range for draw buffer when accessing pixel (#8907)

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Signed-off-by: zhouxingjian <zhouxingjian@xiaomi.com>
This commit is contained in:
caibutshuai
2025-09-30 01:44:37 +08:00
committed by GitHub
parent 2b49fe0217
commit 913a3561e8
2 changed files with 19 additions and 0 deletions
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src/draw/lv_draw_buf.c
+6
View File
@@ -379,6 +379,12 @@ void * lv_draw_buf_goto_xy(const lv_draw_buf_t * buf, uint32_t x, uint32_t y)
LV_ASSERT_NULL(buf);
if(buf == NULL) return NULL;
if(x >= buf->header.w || y >= buf->header.h) {
LV_LOG_ERROR("coordinates out of range, x: %" LV_PRIu32 ", y: %"LV_PRIu32", w: %"LV_PRIu32", h: %"LV_PRIu32, x, y,
(uint32_t)buf->header.w, (uint32_t)buf->header.h);
return NULL;
}
uint8_t * data = buf->data;
/*Skip palette*/
tests/src/test_cases/test_draw_buf_stride.c → tests/src/test_cases/test_draw_buf.c
+13
View File
@@ -114,4 +114,17 @@ void test_draw_buf_stride_adjust(void)
#endif
}
void test_draw_buf_xy_access(void)
{
LV_DRAW_BUF_DEFINE_STATIC(draw_buf, 100, 100, LV_COLOR_FORMAT_RGB565);
LV_DRAW_BUF_INIT_STATIC(draw_buf);
uint8_t * ret = lv_draw_buf_goto_xy(&draw_buf, 50, 50);
TEST_ASSERT_NOT_NULL(ret);
ret = lv_draw_buf_goto_xy(&draw_buf, 100, 100);
TEST_ASSERT_NULL(ret);
ret = lv_draw_buf_goto_xy(&draw_buf, -10, -10);
TEST_ASSERT_NULL(ret);
}
#endif