I keept hearing about Linux root exploits lately and I'm beginning to become worried. Ever since Linux switched away from the stable-unstable versioning scheme, distributions began to adopt a wide variety of kernel versions + their own patches, instead of just adopting the latest kernel version because the latest version isn't always stable. To make the situation even more confusing, some VPS/cloud hosters provide their own kernels, you can't use the distribution's kernel.
For example, today this exploit came out: http://blog.zx2c4.com/749 Debian 6 (2.6.32) isn't vulnerable. Ubuntu 10.04 (2.6.32) isn't vulnerable. But one of my VPS hosters (Debian 6 + 2.6.39) is vulnerable and they haven't fixed it yet. Sigh.
I'm getting a little confused about which kernel versions are vulnerable against which exploits. Is there a comprehensive database somewhere that I can use to check whether my kernel is safe? Or is there a tool that I can use to do the checking?