linux-kernel - [PATCH 0/3] misc: fastrpc: fix memory corruption

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Message-Id: <20220829080531.29681-1-johan+linaro@kernel.org>
Date:   Mon, 29 Aug 2022 10:05:28 +0200
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Amol Maheshwari <amahesh@....qualcomm.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Bjorn Andersson <andersson@...nel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 0/3] misc: fastrpc: fix memory corruption

The fastrpc driver uses a fixed-sized array to store its sessions but
missing and broken sanity checks could lead to memory beyond the array
being corrupted.

This specifically happens on SC8280XP platforms that use 14 sessions for
the compute DSP.

These are all needed for 6.0.

Johan


Johan Hovold (3):
  misc: fastrpc: fix memory corruption on probe
  misc: fastrpc: fix memory corruption on open
  misc: fastrpc: increase maximum session count

 drivers/misc/fastrpc.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

-- 
2.35.1