Check minimum response length on query_network_interface (9ffc5412) · Commits · 戴 / test

fs/cifs/smb2ops.c

+7 −4

Original line number	Diff line number	Diff line
		@@ -265,15 +265,18 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
		FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
		NULL /* no data input /, 0 / no data input */,
		(char **)&out_buf, &ret_data_len);

		if ((rc == 0) && (ret_data_len > 0)) {
		if (rc != 0)
		cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
		else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
		cifs_dbg(VFS, "server returned bad net interface info buf\n");
		rc = -EINVAL;
		} else {
		/* Dump info on first interface */
		cifs_dbg(FYI, "Adapter Capability 0x%x\t",
		le32_to_cpu(out_buf->Capability));
		cifs_dbg(FYI, "Link Speed %lld\n",
		le64_to_cpu(out_buf->LinkSpeed));
		} else
		cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
		}

		return rc;
		}