From: Matej Mužila <[email protected]> Check if cpmsg->size is in limits of DATA_FRAGMENT
Signed-off-by: Matej Mužila <[email protected]> Acked-by: K. Y. Srinivasan <[email protected]> --- If corrupted data are read from /dev/vmbus/hv_fcopy, pwrite can read from memory outside of the buffer (defined at line 138). Added check. --- @@ -104,6 +104,10 @@ static int hv_copy_data(struct hv_do_fcopy *cpmsg) { ssize_t bytes_written; + // Check if the cpmsg->size is in limits of DATA_FRAGMENT + if (cpmsg->size > DATA_FRAGMENT * sizeof(__u8)) + return HV_E_FAIL; + bytes_written = pwrite(target_fd, cpmsg->data, cpmsg->size, cpmsg->offset); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
