I recently updated my kernel, and noticed that it was affecting my graphics drivers. As a quick fix I rolled back the driver , but would like to know if this affects my system security in any way?
Using 64 bit Ubuntu 14.04 - 3.19.0-47-generic
It does not affect your security any more as staying with that old version would have done.
The rollback does not do anything special.
To find out whether the specific update you rolled back or omitted contains severe security patches, look at the changelog of that version you rejected. Therefore visit http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/ and select the respective version directory, then open the
It will contain sections starting with the kernel update version as headline. Those below are the first two sections of the changelog of
As you can see, each changelog contains all previous changelogs as well. The latest changes are on the top. Just take a look at the first line, the headline of the most recent change:
You notice the
Of course you must check that for your own specific kernel version, as I don't know it. You find the running kernel version using
I will second Byte Commander's answer above, and add two basic points of simplification for those who may be confused by all the code / changelog references: