Change in coreboot[master]: device/ddr3: Prevent overflow when adding SMBUS Table 17 entries

[Felix Held (Code Review)]

Felix Held has submitted this change and it was merged. ( https://review.coreboot.org/28588 )

Change subject: device/ddr3: Prevent overflow when adding SMBUS Table 17 entries
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device/ddr3: Prevent overflow when adding SMBUS Table 17 entries

Change-Id: If84c6849011106b2a50e504b79cda9cd6a3a9cc3
Signed-off-by: Nico Huber 
Reviewed-on: https://review.coreboot.org/28588
Tested-by: build bot (Jenkins) 
Reviewed-by: Patrick Rudolph 
---
M src/device/dram/ddr3.c
1 file changed, 6 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Patrick Rudolph: Looks good to me, approved

diff --git a/src/device/dram/ddr3.c b/src/device/dram/ddr3.c
index 63ca964..f27fdcb 100644
--- a/src/device/dram/ddr3.c
+++ b/src/device/dram/ddr3.c
@@ -559,6 +559,12 @@
    	memset(mem_info, 0, sizeof(*mem_info));
    }

+	if (mem_info->dimm_cnt >= ARRAY_SIZE(mem_info->dimm)) {
+		printk(BIOS_WARNING, "BUG: Too many DIMM infos for %s.\n",
+			__func__);
+		return CB_ERR;
+	}
+
    dimm = &mem_info->dimm[mem_info->dimm_cnt];
    if (info->size_mb) {
    	dimm->ddr_type = MEMORY_TYPE_DDR3;