Re: [syzbot] [usb?] KASAN: slab-use-after-free Read in ep_open

[Alan Stern]

On Tue, Aug 18, 2026 at 09:42:34AM +0200, Greg KH wrote:
> On Mon, Aug 17, 2026 at 02:14:17PM -0400, Alan Stern wrote:
> > Greg:
> > 
> > Has this patch ever been queued?
> > 
> > https://lore.kernel.org/linux-usb/ee41fbfd-f368-4a06-95d6-ae9b4267fd82@xxxxxxxxxxxxxxx/
> 
> No because it looks like there are competing patches here as you point
> out.
> 
> > Looks like you can add syzbot's Tested-by: tag, as well as my Acked-by:.
> > 
> > Note that a different patch to fix the same problem was submitted here:
> > 
> > https://lore.kernel.org/linux-usb/20260731230603.4637-1-kartikey406@xxxxxxxxx/
> > 
> > IMO the first patch above is superior.
> 
> So Aleksandr's patch should be applied and not Deepanshu's?

That's my recommendation.  You can take a quick look at the two patches 
and see what you think.

We haven't heard back from Deepanshu.  Aleksandr doesn't seem to have 
strong feelings either way.

Alan Stern