Kibana 4.4.0 crash


I'm running Kibana 4.4.0 on a Linux Debian :
3.2.0-4-amd64 #1 SMP Debian 3.2.57-3 x86_64 GNU/Linux
The VM has 500MB of RAM, one VCPU.

I installed Kibana from this repo :
deb stable main

Java version is :
java version "1.7.0_95" OpenJDK Runtime Environment (IcedTea 2.6.4) (7u95-2.6.4-1~deb7u1) OpenJDK 64-Bit Server VM (build 24.95-b01, mixed mode)

Every day Kibana seems to crash, I don't have much logs to try to understand what's happening.
The node process continuatly increase in RAM until it reach around 90%

22087 kibana 20 0 793m 240m 8296 S 0.7 48.3 0:28.03 node
22087 kibana 20 0 801m 247m 8296 S 0.3 49.8 0:28.75 node

I heard about memory leaks and node process, is it a known issue ?
Anybody knows a workaround ?
Maybe Kibana need more memory to run in production ?

I double the virtual machine available RAM (512 -> 1024MB) the issue is still present.