Dear people,

I have been applying patches over time; and when I recompile the kernel (4.9R p4), it 
keeps the old one around. My question is, though, is it safe to keep /kernel.old? I 
always keep it around, in case the new kernel has a problem. And that always seemed 
like a sensible policy to me. But what if one of the patches contains an exploitable 
bug? I run in securelevel 2, so I am not sure whether users could actually use the old 
kernel (once in multi-user mode). Still, I wonder if this concern is valid at all. Or 
whether I should perhaps get rid of the old kernel.

I appreciate your help,

- Mark

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