Re: [PATCH v2 1/2] signal: avoid shared siginfo namespace rewrites

[Andrew Morton]

On Mon, 22 Jun 2026 20:25:08 +0000 Bradley Morgan <include@xxxxxxxxx> wrote:

> send_signal_locked() rewrites sender ids for the target namespace.
> Group sends reuse the same siginfo, so one recipient can affect the
> next.
> 
> Copy the siginfo before changing it.

Thanks, I'll queue this for 7.3-rc1.  I don't see a need to fast-track
it into mainline, as 7a0cf094944e is from 2019.

Can someone please send along a paragraph which describes the
userspace-visible effects of the bug?  I think this is important when
proposing a backportable fix.  Important for all fixes, really.

I understand that I'm to take no action with "[PATCH v2 2/2] signal:
make send_signal_locked() take const siginfo".