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On 1/4/23 12:11, Gerd Hoffmann wrote:

> The versions are not that ancient.  The problem is more that upstream
> grub is really slow on integrating patches so every distro does carry
> a huge pile of downstream patches.  And they seem to re-introduce the
> bug ...

See also: commit d20b06a3afdf ("OvmfPkg: disable no-exec DXE stack by
default", 2015-09-15). That was more than seven years ago, and it's what

  git blame master -- OvmfPkg/OvmfPkgX64.dsc | grep PcdSetNxForStack

reports today.

Laszlo