linux-kernel - Re: [PATCH] scsi: elx: libefc: potential use after free in efc_nport_vport

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Message-ID: <172489245035.551134.9407681936193800615.b4-ty@oracle.com>
Date: Wed, 28 Aug 2024 22:50:44 -0400
From: "Martin K. Petersen" <martin.petersen@...cle.com>
To: James Smart <jsmart2021@...il.com>,
        Dan Carpenter <dan.carpenter@...aro.org>
Cc: "Martin K . Petersen" <martin.petersen@...cle.com>,
        James Smart <james.smart@...adcom.com>,
        Ram Vegesna <ram.vegesna@...adcom.com>,
        "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
        Daniel Wagner <dwagner@...e.de>, linux-scsi@...r.kernel.org,
        target-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] scsi: elx: libefc: potential use after free in efc_nport_vport_del()

On Thu, 15 Aug 2024 14:29:05 +0300, Dan Carpenter wrote:

> The kref_put() function will call nport->release if the refcount drops
> to zero.  The nport->release release function is _efc_nport_free() which
> frees "nport".  But then we dereference "nport" on the next line which
> is a use after free.  Re-order these lines to avoid the use after free.
> 
> 

Applied to 6.12/scsi-queue, thanks!

[1/1] scsi: elx: libefc: potential use after free in efc_nport_vport_del()
      https://git.kernel.org/mkp/scsi/c/2e4b02fad094

-- 
Martin K. Petersen	Oracle Linux Engineering