Fix "Out-of-bounds write" (#560)

Youw · web-flow · commit 435650a8fb66 · 2023-05-22T13:08:36.000+03:00
Fixes: #541
diff --git a/linux/hid.c b/linux/hid.c
@@ -454,7 +454,7 @@ static int parse_hid_vid_pid_from_uevent_path(const char *uevent_path, unsigned
 	}
 
 	char buf[1024];
-	res = read(handle, buf, sizeof(buf));
+	res = read(handle, buf, sizeof(buf) - 1); /* -1 for '\0' at the end */
 	close(handle);
 
 	if (res < 0) {

Original file line number	Diff line number	Diff line change
`@@ -454,7 +454,7 @@ static int parse_hid_vid_pid_from_uevent_path(const char *uevent_path, unsigned`
`454`	`454`	`}`
`455`	`455`
`456`	`456`	`char buf[1024];`
`457`		`- res = read(handle, buf, sizeof(buf));`
	`457`	`+ res = read(handle, buf, sizeof(buf) - 1); /* -1 for '\0' at the end */`
`458`	`458`	`close(handle);`
`459`	`459`
`460`	`460`	`if (res < 0) {`