Re: CVE-2023-52451: powerpc/pseries/memhp: Fix access beyond end of drmem array

[Jiri Kosina]

On Thu, 29 Feb 2024, Jiri Kosina wrote:

> - you pointed to a fix for UAF in BPF, which definitely is a good fix to 
>   have, I don't even dispute that CVE is justified in this particular 
>   case. What I haven't yet seen though how this connects to in my view 
>   rather serious 'trivial to get root' statement

To elaborate on this a little bit more -- I completely agree that this fix 
is completely in-line with what Kees is, in my view, quite nicely 
describing at [1]. You pointed to a weakness (for which a fix *is* in our 
queue), sure.

But I see a HUGE leap from "fixes a weakness" to bold, aggressive and in 
my view exaggerating statements a-la "I am able to trivially pwn any 
kernel which is not -stable".

[1] https://lore.kernel.org/all/D06F40E5-0DBC-4FF2-BAF5-2373BDF3815C@xxxxxxxxxx/

-- 
Jiri Kosina
SUSE Labs