linux-kernel - Re: [PATCH v2 2/6] rpmsg: glink: Fix use after free in open

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Message-ID: <3db040ee-6b0f-be45-0e23-ab65f16329b6@codeaurora.org>
Date:   Tue, 8 Oct 2019 17:51:05 -0700
From:   Chris Lew <clew@...eaurora.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Ohad Ben-Cohen <ohad@...ery.com>
Cc:     linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v2 2/6] rpmsg: glink: Fix use after free in open_ack
 TIMEOUT case



On 10/4/2019 3:26 PM, Bjorn Andersson wrote:
> From: Arun Kumar Neelakantam <aneela@...eaurora.org>
> 
> Extra channel reference put when remote sending OPEN_ACK after timeout
> causes use-after-free while handling next remote CLOSE command.
> 
> Remove extra reference put in timeout case to avoid use-after-free.
> 
> Fixes: b4f8e52b89f6 ("rpmsg: Introduce Qualcomm RPM glink driver")
> Cc: stable@...r.kernel.org
> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> Signed-off-by: Arun Kumar Neelakantam <aneela@...eaurora.org>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---

Acked-By: Chris Lew <clew@...eaurora.org>

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