spec: protect against segfault
when the user passes in "/dev/null::w"
@@ -173,7 +173,7 @@ func ParseDevice(device string) (string, string, string, error) { //nolint
if IsValidDeviceMode(arr[1]) {
permissions = arr[1]
} else {
- if arr[1][0] != '/' {
+ if len(arr[1]) == 0 || arr[1][0] != '/' {
return "", "", "", fmt.Errorf("invalid device mode: %s", arr[1])
}
dst = arr[1]
