[dpdk-dev] [PATCH v1] examples/vm_power: fix strcpy buffer overrun

David Hunt david.hunt at intel.com
Fri Jul 12 16:04:02 CEST 2019


replace strcpy with rte_strlcpy to prevent buffer overrun
With fix, attempting to use a VERY lonng vm name results in a nicely
truncated 32 character name rather than a segfault:
Setting VM Name to [sdfdsfsfsdffdsdsasdsadasdakjshd]

Cc: stable at dpdk.org
Fixes: 59287933a0bb ("examples/vm_power: add options to guest app")
Signed-off-by: David Hunt <david.hunt at intel.com>
---
 examples/vm_power_manager/guest_cli/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/vm_power_manager/guest_cli/main.c b/examples/vm_power_manager/guest_cli/main.c
index 36365b124..a18eb214a 100644
--- a/examples/vm_power_manager/guest_cli/main.c
+++ b/examples/vm_power_manager/guest_cli/main.c
@@ -65,7 +65,7 @@ parse_args(int argc, char **argv)
 		switch (opt) {
 		/* portmask */
 		case 'n':
-			strcpy(policy->vm_name, optarg);
+			rte_strlcpy(policy->vm_name, optarg, VM_MAX_NAME_SZ);
 			printf("Setting VM Name to [%s]\n", policy->vm_name);
 			break;
 		case 'b':
-- 
2.17.1



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