From: Seth Forshee Date: Fri, 23 Jun 2017 14:04:22 +0000 (-0500) Subject: scsi: aacraid: Don't copy uninitialized stack memory to userspace X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=342ffc26693b528648bdc9377e51e4f2450b4860;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git scsi: aacraid: Don't copy uninitialized stack memory to userspace Both aac_send_raw_srb() and aac_get_hba_info() may copy stack allocated structs to userspace without initializing all members of these structs. Clear out this memory to prevent information leaks. Fixes: 423400e64d377 ("scsi: aacraid: Include HBA direct interface") Fixes: c799d519bf088 ("scsi: aacraid: Retrieve HBA host information ioctl") Signed-off-by: Seth Forshee Reviewed-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c index 6bb6ed48e31d..9ab0fa959d83 100644 --- a/drivers/scsi/aacraid/commctrl.c +++ b/drivers/scsi/aacraid/commctrl.c @@ -949,6 +949,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) &((struct aac_native_hba *)srbfib->hw_fib_va)->resp.err; struct aac_srb_reply reply; + memset(&reply, 0, sizeof(reply)); reply.status = ST_OK; if (srbfib->flags & FIB_CONTEXT_FLAG_FASTRESP) { /* fast response */ @@ -1020,6 +1021,7 @@ static int aac_get_hba_info(struct aac_dev *dev, void __user *arg) { struct aac_hba_info hbainfo; + memset(&hbainfo, 0, sizeof(hbainfo)); hbainfo.adapter_number = (u8) dev->id; hbainfo.system_io_bus_number = dev->pdev->bus->number; hbainfo.device_number = (dev->pdev->devfn >> 3);