ChangeSet 1.1318.4.8, 2003/06/16 17:39:56-07:00, [EMAIL PROTECTED]
[PATCH] USB storage: avoid NULL-ptr OOPS
This patch will avoid a NULL-pointer dereference OOPS which is caused by
oddly-formed (yet legal) INQUIRY commands that request 0 bytes.
drivers/usb/storage/protocol.c | 4 ++++
1 files changed, 4 insertions(+)
diff -Nru a/drivers/usb/storage/protocol.c b/drivers/usb/storage/protocol.c
--- a/drivers/usb/storage/protocol.c Wed Jun 18 11:15:03 2003
+++ b/drivers/usb/storage/protocol.c Wed Jun 18 11:15:03 2003
@@ -82,6 +82,10 @@
if (srb->cmnd[0] != INQUIRY)
return;
+ /* oddly short buffer -- bail out */
+ if (srb->request_bufflen < 3)
+ return;
+
data_ptr = find_data_location(srb);
if ((data_ptr[2] & 7) == 2)
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