2 May
2026
2 May
'26
5:09 p.m.
It's a flaw in the kernel, so you have to patch the kernel in anything that can run a
shell where you don't want privilege escalation.
Which I would think is everywhere.
Have you seen any info on patch availability or what versions of Fedora and other distros
will have available patches?
I saw some instructions where you can disable a kernel module using modprobe to avoid the
vulnerability. There was no information on what functionality was affected by making the
change. It sounded like it reverted to doing the copy correctly, which would be a
relatively easy and low impact fix.
On Fri, May 01, 2026 at 05:54:26PM -0700, Brian E. Lavender wrote:
I take it most have heard about the copy fail
vulnerability if you have
local shell?
https://arstechnica.com/security/2026/04/as-the-most-severe-linux-threat-in…
I wonder if you patch the hypervisor when using PV guests if you have to
update the guests too?
--
Brian Lavender
https://www.brie.com/brian/
"There are two ways of constructing a software design. One way is to
make it so simple that there are obviously no deficiencies. And the other
way is to make it so complicated that there are no obvious deficiencies."
Professor C. A. R. Hoare
The 1980 Turing award lecture
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-Gary
It is a simple thing to make things complex,
a complex thing to make things simple.