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scsi: megasas: use appropriate property buffer size 

When setting MegaRAID SAS controller properties via MegaRAID
Firmware Interface(MFI) commands, a user supplied size parameter
is used to set property value. Use appropriate size value to avoid
OOB access issues.

Reported-by: Li Qiang <liqiang6-s@360.cn>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-Id: <1464172291-2856-2-git-send-email-ppandit@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 1b85898025)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Prasad J Pandit 2016-05-25 16:01:29 +05:30 committed by Michael Roth
parent 7a2c32ec06
commit 1467b936d9
1 changed files with 1 additions and 1 deletions
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2
hw/scsi/megasas.c
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@ -1446,7 +1446,7 @@ static int megasas_dcmd_set_properties(MegasasState *s, MegasasCmd *cmd)
dcmd_size);
return MFI_STAT_INVALID_PARAMETER;
}
dma_buf_write((uint8_t *)&info, cmd->iov_size, &cmd->qsg);
dma_buf_write((uint8_t *)&info, dcmd_size, &cmd->qsg);
trace_megasas_dcmd_unsupported(cmd->index, cmd->iov_size);
return MFI_STAT_OK;
}