From: Brian King Date: Fri, 15 Aug 2008 15:59:26 +0000 (-0500) Subject: [SCSI] ibmvfc: Sanitize response lengths X-Git-Tag: v2.6.27-rc4~33^2~2 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2bac406df52100aec42e230a2cc2986d34e86218;p=linux-2.6 [SCSI] ibmvfc: Sanitize response lengths Sanitize the response lengths in order to prevent possible oopses in the command response path. Signed-off-by: Brian King Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 58f8c9e39a..6ecc0ddd44 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -1457,8 +1457,8 @@ static void ibmvfc_scsi_done(struct ibmvfc_event *evt) struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; struct scsi_cmnd *cmnd = evt->cmnd; - int rsp_len = 0; - int sense_len = rsp->fcp_sense_len; + u32 rsp_len = 0; + u32 sense_len = rsp->fcp_sense_len; if (cmnd) { if (vfc_cmd->response_flags & IBMVFC_ADAPTER_RESID_VALID) @@ -1475,7 +1475,7 @@ static void ibmvfc_scsi_done(struct ibmvfc_event *evt) rsp_len = rsp->fcp_rsp_len; if ((sense_len + rsp_len) > SCSI_SENSE_BUFFERSIZE) sense_len = SCSI_SENSE_BUFFERSIZE - rsp_len; - if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len) + if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len && rsp_len <= 8) memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len); ibmvfc_log_error(evt);