This is a note to let you know that I've just added the patch titled

scsi: csiostor: fix use after free in csio_hw_use_fwconfig()

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: scsi-csiostor-fix-use-after-free-in-csio_hw_use_fwconfig.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Mon Apr 9 17:09:24 CEST 2018

From: Varun Prakash varun@chelsio.com Date: Wed, 17 May 2017 20:30:43 +0530 Subject: scsi: csiostor: fix use after free in csio_hw_use_fwconfig()

From: Varun Prakash varun@chelsio.com

[ Upstream commit a351e40b6de550049423a26f7ded7b639e363d89 ]

mbp pointer is passed to csio_hw_validate_caps() so call mempool_free() after calling csio_hw_validate_caps().

Signed-off-by: Varun Prakash varun@chelsio.com Fixes: 541c571fa2fd ("csiostor:Use firmware version from cxgb4/t4fw_version.h") Reviewed-by: Johannes Thumshirn jthumshirn@suse.de Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/csiostor/csio_hw.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/scsi/csiostor/csio_hw.c +++ b/drivers/scsi/csiostor/csio_hw.c @@ -1769,7 +1769,6 @@ csio_hw_use_fwconfig(struct csio_hw *hw, goto bye; }

- mempool_free(mbp, hw->mb_mempool); if (finicsum != cfcsum) { csio_warn(hw, "Config File checksum mismatch: csum=%#x, computed=%#x\n", @@ -1780,6 +1779,10 @@ csio_hw_use_fwconfig(struct csio_hw *hw, rv = csio_hw_validate_caps(hw, mbp); if (rv != 0) goto bye; + + mempool_free(mbp, hw->mb_mempool); + mbp = NULL; + /* * Note that we're operating with parameters * not supplied by the driver, rather than from hard-wired

Patches currently in stable-queue which might be from varun@chelsio.com are

queue-4.9/scsi-csiostor-fix-use-after-free-in-csio_hw_use_fwconfig.patch