AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-04-20 03:47:41 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

scsi: storvsc: Validate length of incoming packet in storvsc_on_channel_callback()

Browse Source 
Check that the packet is of the expected size at least, don't copy data
past the packet.

Link: https://lore.kernel.org/r/20201118145348.109879-1-parri.andrea@gmail.com
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Reported-by: Saruhan Karademir <skarade@microsoft.com>
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Andrea Parri (Microsoft) 2020-11-18 15:53:48 +01:00 committed by Martin K. Petersen
parent 6112ff4e8f
commit 3b8c72d076
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/scsi/storvsc_drv.c
View File

@ -1246,6 +1246,11 @@ static void storvsc_on_channel_callback(void *context)
request = (struct storvsc_cmd_request *) request = (struct storvsc_cmd_request *)
((unsigned long)desc->trans_id); ((unsigned long)desc->trans_id);
if (hv_pkt_datalen(desc) < sizeof(struct vstor_packet) - vmscsi_size_delta) {
dev_err(&device->device, "Invalid packet len\n");
continue;
}
if (request == &stor_device->init_request || if (request == &stor_device->init_request ||
request == &stor_device->reset_request) { request == &stor_device->reset_request) {
memcpy(&request->vstor_packet, packet, memcpy(&request->vstor_packet, packet,