ipmitool/ipmitool-CVE-2020-5208-Fix-buffer-overflow-in-ipmi_spd_print_fru.patch

From 6989c8413f80429b6c82d1fef4c8d0a79daf6d7b Mon Sep 17 00:00:00 2001
From: fengtao40 <fengtao40@huawei.com>
Date: Tue, 11 Feb 2020 21:05:31 -0500
Subject: [PATCH] Fix buffer overflow in ipmi_spd_print_fru

---
 lib/dimm_spd.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/dimm_spd.c b/lib/dimm_spd.c
index 41e30db..68f3b4f 100644
--- a/lib/dimm_spd.c
+++ b/lib/dimm_spd.c
@@ -1621,7 +1621,7 @@ ipmi_spd_print_fru(struct ipmi_intf * intf, uint8_t id)
 	struct ipmi_rq req;
 	struct fru_info fru;
 	uint8_t *spd_data, msg_data[4];
-	int len, offset;
+	uint32_t len, offset;
 
 	msg_data[0] = id;
 
@@ -1697,6 +1697,13 @@ ipmi_spd_print_fru(struct ipmi_intf * intf, uint8_t id)
 		}
 
 		len = rsp->data[0];
+		if(rsp->data_len < 1
+		   || len > rsp->data_len - 1
+		   || len > fru.size - offset)
+		{
+			printf(" Not enough buffer size");
+			return -1;
+		}
 		memcpy(&spd_data[offset], rsp->data + 1, len);
 		offset += len;
 	} while (offset < fru.size);
-- 
2.19.1