Linux io-uring development
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From: Greg KH <gregkh@linuxfoundation.org>
To: Carlo Conti <carlottoconti344@gmail.com>
Cc: axboe@kernel.dk, io-uring@vger.kernel.org
Subject: Re: [SECURITY] io_uring UAF: io_uring_cmd_issue_blocking missing sqe copy before RESIZE_RINGS
Date: Mon, 4 May 2026 14:10:17 +0200	[thread overview]
Message-ID: <2026050401-juniper-undocked-190c@gregkh> (raw)
In-Reply-To: <CAAiJJe3rVHjEO6yZ=w6S0igYFE8ROBay+An7PnuMX0KndxwXOg@mail.gmail.com>

On Mon, May 04, 2026 at 01:59:01PM +0200, Carlo Conti wrote:
> Hello,
> 
> I have identified a Use-After-Free vulnerability in the Linux kernel
> io_uring subsystem, confirmed on Linux 6.19.11.

That is an unsupported and obsolete kernel version, does this happen on
the latest 7.0 release?

And can you provide a patch to fix this issue as you seem to be able to
test this?

Also, you sent this to a public mailing list, so I'll take security@k.o
off the response now as it's not needed.

thanks,

greg k-h

       reply	other threads:[~2026-05-04 12:10 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CAAiJJe3rVHjEO6yZ=w6S0igYFE8ROBay+An7PnuMX0KndxwXOg@mail.gmail.com>
2026-05-04 12:10 ` Greg KH [this message]
2026-05-04 12:16 ` [SECURITY] io_uring UAF: io_uring_cmd_issue_blocking missing sqe copy before RESIZE_RINGS Jens Axboe
2026-05-04 12:29   ` Jens Axboe

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