fix shell msh_exec memory over-bound.

2021-05-22 19:50:49 +08:00 · 2021-05-22 19:50:49 +08:00 · 6c01083502
parent 19de22f485
commit 6c01083502
1 changed files with 1 additions and 1 deletions
--- a/components/finsh/msh.c
+++ b/components/finsh/msh.c
@ -374,7 +374,7 @@ int msh_exec(char *cmd, rt_size_t length)
    int cmd_ret;

    /* strim the beginning of command */
-    while (*cmd  == ' ' || *cmd == '\t')
+    while ((length > 0) && (*cmd  == ' ' || *cmd == '\t'))
    {
        cmd++;
        length--;