rule: Fix for potential off-by-one in cmd_add_loc()

Using num_attrs as index means it must be at max one less than the
array's size at function start.

Fixes: 27362a5bfa433 ("rule: larger number of error locations")
Signed-off-by: Phil Sutter <phil@nwl.cc>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/rule.c b/src/rule.c
index dbbe744e..92daf2f3 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -1275,7 +1275,7 @@ struct cmd *cmd_alloc(enum cmd_ops op, enum cmd_obj obj,
 
 void cmd_add_loc(struct cmd *cmd, uint16_t offset, const struct location *loc)
 {
-	if (cmd->num_attrs > NFT_NLATTR_LOC_MAX)
+	if (cmd->num_attrs >= NFT_NLATTR_LOC_MAX)
 		return;
 
 	cmd->attr[cmd->num_attrs].offset = offset;