From: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Date: Wed, 7 Apr 2021 10:59:53 +0000 (+0100)
Subject: table: fix out of bounds write
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=97005a6665f64f920695b0a64cb35bf7cfbd4c3d;p=dpdk.git

table: fix out of bounds write

Fix out of bounds write. The allocated string size was incorrect.

Coverity issue: 369670
Fixes: 66440b7b22f2 ("table: add wildcard match table type")

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
---

diff --git a/lib/librte_table/rte_swx_table_wm.c b/lib/librte_table/rte_swx_table_wm.c
index 9924231b34..e260be1062 100644
--- a/lib/librte_table/rte_swx_table_wm.c
+++ b/lib/librte_table/rte_swx_table_wm.c
@@ -53,15 +53,14 @@ env_free(void *start, size_t size)
 
 static char *get_unique_name(void)
 {
-	char *name;
-	uint64_t *tsc;
+	uint64_t tsc = rte_get_tsc_cycles();
+	size_t size = sizeof(uint64_t) * 2 + 1;
+	char *name = calloc(1, size);
 
-	name = calloc(7, 1);
 	if (!name)
 		return NULL;
 
-	tsc = (uint64_t *) name;
-	*tsc = rte_get_tsc_cycles();
+	snprintf(name, size, "%016" PRIx64, tsc);
 	return name;
 }