qcacmn: Possible OOB read in process_fw_diag_event_data
API "fw_diag_data_event_handler" is the handler of an event
WMI_DIAG_DATA_CONTAINER_EVENTID comes from FW. Arguments of
this handler function come from FW.
If num_data may be less than size of(struct wlan_diag_data),
possible OOB while extracting event data.
Fix is to add a sanity check for num_data to avoid the OOB
read.
Bug: 204909067
Test: Regression test
Signed-off-by: Hsiu-Chang Chen <hsiuchangchen@google.com>
Change-Id: Ia2eb62dbaa154936bdb4ea34065657d441f12810
CRs-Fixed: 3001178
1 file changed
