check ssh->ctx before dereferencing

rlm2002 · rlm2002 · commit 13a1c4a0469f · 2025-07-21T10:44:12.000-06:00
diff --git a/src/internal.c b/src/internal.c
@@ -15120,7 +15120,7 @@ static int GetAllowedAuth(WOLFSSH* ssh, char* authStr)
 
     typeAllowed |= WOLFSSH_USERAUTH_PASSWORD;
 #ifdef WOLFSSH_KEYBOARD_INTERACTIVE
-    if (ssh->ctx->keyboardAuthCb != NULL) {
+    if (ssh->ctx && ssh->ctx->keyboardAuthCb) {
         typeAllowed |= WOLFSSH_USERAUTH_KEYBOARD;
     }
 #endif

Original file line number	Diff line number	Diff line change
`@@ -15120,7 +15120,7 @@ static int GetAllowedAuth(WOLFSSH* ssh, char* authStr)`
`15120`	`15120`
`15121`	`15121`	`typeAllowed \|= WOLFSSH_USERAUTH_PASSWORD;`
`15122`	`15122`	`#ifdef WOLFSSH_KEYBOARD_INTERACTIVE`
`15123`		`- if (ssh->ctx->keyboardAuthCb != NULL) {`
	`15123`	`+ if (ssh->ctx && ssh->ctx->keyboardAuthCb) {`
`15124`	`15124`	`typeAllowed \|= WOLFSSH_USERAUTH_KEYBOARD;`
`15125`	`15125`	`}`
`15126`	`15126`	`#endif`