frame.c: validate frame data length is less than samples when adjusting volume

mkmer · mkmer · commit 2c75f2e52e4e · 2025-05-12T10:40:13.000-04:00
Resolves: asterisk#1230
diff --git a/main/frame.c b/main/frame.c
@@ -817,9 +817,7 @@ int ast_frame_adjust_volume_float(struct ast_frame *f, float adjustment)
 
 	if ((f->frametype != AST_FRAME_VOICE) || !(ast_format_cache_is_slinear(f->subclass.format))) {
 		return -1;
-	}
-
-	if (!adjustment) {
+	} else if (!adjustment || (f->samples > f->datalen)) {
 		return 0;
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -817,9 +817,7 @@ int ast_frame_adjust_volume_float(struct ast_frame *f, float adjustment)`
`817`	`817`
`818`	`818`	`if ((f->frametype != AST_FRAME_VOICE) \|\| !(ast_format_cache_is_slinear(f->subclass.format))) {`
`819`	`819`	`return -1;`
`820`		`- }`
`821`		`-`
`822`		`- if (!adjustment) {`
	`820`	`+ } else if (!adjustment \|\| (f->samples > f->datalen)) {`
`823`	`821`	`return 0;`
`824`	`822`	`}`
`825`	`823`