CVE-2023-52823: kernel: kexec: copy user-array safely

[Greg Kroah-Hartman]

On Fri, May 24, 2024 at 04:13:53PM +0200, Jiri Bohac wrote:
> On Fri, May 24, 2024 at 02:38:04PM +0200, Jiri Bohac wrote:
> > On Fri, May 24, 2024 at 12:15:47PM +0200, Greg Kroah-Hartman wrote:
> > > Nice, but then why was this commit worded this way?  Now we check twice?
> > > Double safe?  Should it be reverted?
> > 
> > double safe's good; turning it into a CVE not so much :(
> > CVE-2023-52822, CVE-2023-52824 and CVE-2023-52820, originally from the same patch
> > series, seem to be the exact same case.
> 
> Same thing: CVE-2023-52758

Agreed, now rejected, thanks for the review!

greg k-h